Kamina: Simon look! It's a hot spring! Ohh... Ohh, a hot spring! A veritable smorgasbord of everything a man's heart truly desires and craves! A building that's sole function is to accommodate to a man's passion, fiery spirit and raging soul!The cast finds a reason to spend an episode at a hot spring (onsen, [温泉]) — a popular type of Japanese resort/attraction similar to communal bathing.note It's the Japanese equivalent of a European spa town. Naturally this provides an excusable opportunity for Fanservice if a show is so inclined, although some shows aimed at younger kids will use toweled characters. Some series that aren't geared towards younger viewers will broadcast with towels (and/or Censor Steam), but remove them from the DVD version as an incentive to buy the DVDs. In milder situations, this is merely equivalent to a bath scene where the episode slows down so the characters can relax and think about the events of the day. Often a trip to an onsen will lead to characters accidentally seeing each-other in the nude. Or intentionally seeing each other in the nude. Or falling onto each other in the nude... whatever they want, really, as long as someone ends up naked. Occasionally, there may be a little ping-pong playing afterwards, and the characters will likely wear yukatas for added fanservice, and drinking some nice, cold milk. The low-budget version of this is the sento [銭湯] episode, where the characters go to the public bath house together. Usually, it's because there's a plumbing or other utility failure at home. This kind of scenario is so common in anime there is even a wiki that catalogues them. Cousin to the Beach Episode and Public Bathhouse Scene. Every anime more than two episodes long will include at least one of these scenes.
Simon: Uh, Bro, what are you talking about?
Kamina: Boobshots, boobshots, boobshots, boobshots, boooooooobshoooooots!
Simon: Uh, Bro, what are you talking about?
Kamina: Boobshots, boobshots, boobshots, boobshots, boooooooobshoooooots!
— Gurren Lagann The Satire, Chapter 1 act V
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Anime & Manga
- The 11eyes OVA becomes one at the end. Although they are wearing bathing suits and its mixed bathing.
- 801 T.T.S. Airbats: The fourth episode has the gang stopover at a local hotspring that turns out to be haunted. Or so they're lead to believe.
- Not in the series proper, but the OVA episode "Vacation" for Accel World centered around Haruyuki's friends taking him to a hot spring to help him lose weight for an upcoming physical exam. The place serves for a bit of soul searching for both him and his girlfriend Kuroyukihime. In playing with the series's rules, there also exists a virtual counterpart to the hot springs in the Accelerated World, which the characters take a dip in as their avatars.
- In the Ah! My Goddess manga, Keiichi wins a trip to a Hot Springs Resort. Due to a series of mishaps with Chihiro and their ride, Belldandy conjures up an impromptu Hot Springs near where they breakdown to at least salvage the situation.
- Aikatsu!: Subverted in episode 24 of anime season 1. The audition sequence ends before the opening, the main trio is left to spend a short break opting to visit a certain idols-approved hot springs inn. They end up captivated by scenery on the final bus stretch, get off, have a picnic and a nap, with too little time left to perhaps provide the series with that kind of fanservice.
- Ai Kora: Played for laughs and lampshaded in the same chapter, when Hachibe invites all the girls along with him to an onsen he "won" tickets for (he really worked at a bunch of several part time jobs to earn the money to buy them, unsurprisingly.) simply so he can talk to Sakurako and figure out his feelings for her and vice versa, and also to peek at the girls of course.
- Ai Yori Aoshi did this twice. In one of them, a little boy is frightened by Kaoru's terribly scarred back. This actually provides a Fridge Brilliance insight into his state of mind at this point. The fact that he didn't think of it shows that Kaoru's Dark and Troubled Past isn't so much on his mind anymore, thanks to his True Companions.
- Having brought Sae to the hot springs for work training, after hearing her continuous yelps from the fish nipping her legs, Tachibana passes out from horniness.
- And underclassman and swimming club member Ai confesses at a hidden hot spring while nude.
- Anpanman has the character Onsen-kun, who actually makes hot springs. Every starring episode he gets will be a hot springs episode. The show is meant for a young audience, so no Fanservice is intended.
- Happens in one episode of ARIA with everyone wearing Modesty Towel, but with a variation: most of the scene are set in the closed-air hot spring.
- In Axis Powers Hetalia, Japan has a small hot spring in his Big Fancy House. Both in the manga and the anime, England gets to enjoy the warm water — and befriend some spirits, like a kappa and a zashiki warashi. Who have to leave the house since Japan can't see them anymore.
- The third OVA for Blue Seed Beyond was a long contrived Hot Springs episode where the team had to stay in the onsen itself or else a bomb would detonate and kill them all. Of note, the main plot was already resolved in the second OVA, so this was apparently nothing more than an excuse for having female characters wear swimsuits (with Kusanagi in a speedo as a bonus).
- In Brave10, the Braves go to Yukimura's private onsen as a reward after Ishikawa Goemon's attack on Ueda in the manga. Since this fight was cut from the anime, it appears instead in the second half of episode six after Seikai's introduction.
- Parodied in Candy Boy:
Sakuya: Aw, come on, Kanade-senpai.
There has to be a hot spring when we take a trip like this.
And the cliché says it's always an open-air one.
It'll have unnaturally thick steam,
and rocks, fences and shampoo bottles placed oh-so strategically.
[Luckily for Kanade, there aren't any hot springs at their destination...]
- Char's Deleted Affair (a Gundam Expanded Universe manga): An artificial hot spring is constructed on Axis and the three women who are kinda interested in Char wind up trying it out, including a younger Haman Karn.
- Cute High Earth Defense Club LOVE! takes its Fanservice above and beyond. Not only has there not been an episode yet where the characters didn't visit a hot spring, but all the regular characters are called after prominent onsen.
- Invoked in Darker Than Black by the Cosplay Otaku Girl as a part of Clueless Detective activity.
- Episode 6 of Date A Live is dedicated to everybody trying to get to the hot spring, only to face obstacles on the way. When they finally make it, Yoshino accidentally freezes it solid. Fortunately, Kannazuki, who had been ordered to dig a massive hole as punishment at the beginning of the episode, uncovers a geyser, and they convert that into an onsen.
- In Detective School Q, two multiple murders happen in hot springs. Only the second one had fanservicy scenes: Kintarou first attempts to forcibly strip Ryuu off his modesty towel, then he and Kyuu try to peep on a Sexy Secretary who's bathing at the other side but end up seeing Megu nude instead. And the latter incident ends up being one of the clues to catch the Serial Killer... who happened to be said Sexy Secretary.
- The Digimon series has invoked one nearly every season.
- In Digimon Xros Wars, Akari, the lone girl in the party at the time, is alone on her side of the rocks. When she notices the villains of the week approaching, she peeks around the side to tell Taiki and Zenjirou. Zenjiro gets all freaked out and accuses her of peeping.
- El Cazador de la Bruja has the main characters visit a hot spring in the middle of a Mexican desert. Lampshaded by having the characters actually say that it's common in Japan, and then by having one woman go in without a swimsuit on the grounds that that's how they do it in Japan.
- One in Fairy Tail with Lucy and Erza bathing together during the Loke arc.
- There is another one in chapter 261 with Lucy, Erza, Wendy, Levy and Juvia. Natsu, Gray, Jet and Droy try to do some Outdoor Bath Peeping. This was initially omitted from the TV anime but was instead made as the fourth OVA where the fanservice was increased.
- There's another at the end of the Sun Village arc. Interestingly this one is unisex with Lucy and Wendy embarassed (Erza doesn't really seem to care) until they notice the guys aren't checking them out at all. They point out that thanks to their usual wacky antics they've accidentally seen them naked so many times the novelty is gone, and they proceed to enjoy their bath together without any incident.
- In The Familiar of Zero, a hot spring erupts on Saito and Louise's land. Saito quickly converts it into a onsen and invites everybody to use it. Several characters had never heard of a hot spring, but agree to come when it is explained, and the girls like how it is good for the skin. They agree to have the boys and girls take turns, but the boys (except for Saito) predictably try to peep, only to be blasted away. Tiffania faints from the heat and has to be carried out. Later that night, Saito and Louise use the onsen together.
- Fruits Basket has an episode where Kyo, Tohru, Momiji and Yuki visit the hot springs resort owned by the Sohma family. Not as much fanservice for guys, but a fair amount for the female audience.
- Full Metal Panic? Fumoffu. Episode 9, alternatively titled "The Hot Springs Episode", is a direct parody of the hot springs cliché (among others), and features three male characters trying to infiltrate a women's bath, fully protected by a steel wall between the male and female sides to prevent peeking, sentry guns and mines.
- There was also a bit of one in the original Full Metal Panic! in the bath on the TdD.
- Episode 19 of The Galaxy Railways has the members of Sirius, Spica, and Vega platoons vacationing at a Hot Springs ouned by Captain Murase's parents.
- Get Backers has two. One involves Ban and Ginji mistaking Kazuki for a girl at a distance and trying to peep on him, Juubei and Kazuki cranking up the Ho Yay, and Everything's Better with Monkeys. The other involves Shido proving that his girlfriend Madoka has him whipped, Ban and Ginji being very intimidated by the size of Shido's... um... and Everything's Better with Monkeys. Again.
- Ginga Densetsu Weed: Tesshin and his pack lead Weed and the soldiers to hot springs to recover from their wounds and enjoy themselves. While there, Jerome (who went missing the episode before) is revealed to be recovering from a bullet wound, and Tesshin gives Weed a moving speech Gin told him to give to him. It's also where Weed learns to perfect the Zetzu Tenrou Battouga and uses it on a group of wild boars attacking the dogs.
- Gin Tama has this on episodes 131 to 134 as Stand Arc where the Yorozuya and Otae-san took on a vacation and zany misadventure about spiri... stands.
- Then on Episodes 219-B and 220, Gintoki, Shinpachi and the Shinsengumi are on this trope, now with Hedoro and his family. Hilarity ensues.
- The one in Girls Bravo takes place in episode 11, when Yukinari, Kirie, and Koyomi take a trip in the countryside. Except Fukuyama and his sister, Lisa, decide to follow them. So their peaceful trip turns into a ping pong match between Kirie and Fukuyama to decide whether they got the boot, or if Kirie would have to use her naked body as a loofah to wash Fukuyama's back, if she lost.
- Gravion, naturally, has a Hot Springs Resort episode, and naturally (being Gravion), it still ends with a Giant Robot battle.
- One of the earlier episodes of Green Green has the school (which has just become co-ed) opening a hot spring, and focuses mainly on the boys trying to peek on the girls, ending with the boys all breaking the fence and spilling right on top of the nude girls (no towels, with the level of fanservice the anime exhibits), and later the main character searching underwater with one of his love interests for a key, to decide whether or not the guys get access to the springs. The springs appeared at times in later episodes.
- Haiyore! Nyarko-san subverted this during the Adobe Flash-animated Remember my Love(craft) series, teasing a Hot Springs Episode in the Next Episode Preview, then spending the entire running time with a shot of Nyarko's pet Shanta-while we just hear the female cast talking to one another. At one point Ato-ko says "I feel kind of bad about teasing the audience like this..."
- The trope was played straight with the OVA episode for Nyarko-san W, the second TV season.
- Hanaukyō Maid Tai. In the second half of episode 7 Taro and some of the maids go to a bathhouse (the first half was a Beach Episode).
- Hana Yori Dango has a couple of episodes that take place at an onsen, where Tsukushi passes out in the onsen and has to be rescued by Rui.
- Harukanaru Toki no Naka de 3: There's a short "chibi" anime special for that takes place at a hot spring.
- Hayate the Combat Butler: Lampshaded and subverted in Ch. 117. After the characters spent about 5 chapters trying to get to a special hot springs, the first thing Hayate and Maria do is to relax... in massage chairs. Another character even exclaims, "Why hasn't the bath scene appeared yet?!"
- The anime has at least two episodes centered around hot springs over its two seasons. The male main character isn't interested in peeking, unashamedly entering one of the springs when his (female) master has the effect of getting drunk. It seems the 'girls' are more likely to peek at each other in this story. And Ayumu is the only one who does that much.
- Hell Girl has one where Hell hotline was instrumental in the building and destruction of a hot spring.
- InuYasha has one every dozen or so episodes, particularly early on; the villagers find Kagome odd for her love of "purifying herself" in springs, but she eventually turns Sango on to hot spring bathing. This results in one of the series' Running Gags - Celibate Hero Inuyasha charging to the rescue after Kagome screams (sometimes even for him) only to end up an Accidental Pervert and subjected to a "sit" command. Once Chivalrous Pervert Miroku joins the band, this escalates to Inuyasha's efforts to deter his Girl Watching not only getting the monk clonked in the head by Sango's boomerang (even if she's not CARRYING it), but Kagome "sitting" Inuyasha just for being present.
- Iono the Fanatics has the cast spending approximately half of the huge first chapter in a hot spring.
- Is the Order a Rabbit?: Episode 8, which also doubles as a Beach Episode as well, as the girls go to a hot springs that also has a swimming pool as well.
- Second season of Junjou Romantica has Usagi and Misaki vacationing at a onsen, where they unfortunately meet Usagi' father Akihiko.
- In Katekyo Hitman Reborn! they play the cheap version in when Dino's pet turtle destroys their bath tub. (and most of the house)
- Kemono Friends has a fairly fanservice-free hot springs sequence in Episode 9 after Kaban and Serval manage to restore power to the mountain lodge. Amusingly, this bit reveals that the Friends are actually wearing clothing, something even they didn't realize until Kaban said that people usually undress before bathing ("You mean this stuff comes off?!").
- Featured in a number of chapters in Kochikame when the main characters relax in an onsen. Featured in a number of Ryotsu's childhood flashbacks.
- Koibana Onsen is about three sisters running an onsen. Twice, they take a vacation to visit an.... onsen!
- In chapters 109-110 of Kuroko no Basuke, all of the main characters, plus one of the main Opposing Sports Teams, all go to an onsen. Naturally, Fanservice abounds.
- Love Hina is set in a girls' dormitory that used to be a hot springs resort; the girls living there use the spring, and the entire show can be considered a single continuous Hot Springs Episode (except, of course, for its several Beach Episodes).
- Magical Girl Lyrical Nanoha: The cast goes to a Hot Springs or Public Bath together once per season. The Fanservice-oriented first season had this occur in the anime itself. The later two seasons relegated these episodes to the Sound Stages. The ViVid manga also features one (with extra fanservice).
- Mahoromatic: In hot spring issue of the manga the typical gender roles usually inherent with this trope are inverted. Miss Shikijou encourages the other girls to spy on the boys' side. The flimsy dividing wall collapses when they try, and they all scatter, whooping and laughing.
- Early on, Mahou Sensei Negima! involves quite a bit of action in the pool-sized bath, although not that kind of action. It dies down until a "Chapter 100% in the nude" appears as a break involving hot springs.
- One early chapter earns points for confining a hot bath to a steel drum barely big enough for one person. There were two in it.
- Majin Tantei Nougami Neuro has an onsen episode in which Yako does not even get to enjoy the hot springs because one of Neuro's devilish creatures was set loose on the water.
- Maken-ki! has two, in chapters 4 and 33 respectively:
- Yuuka decides to have the Maken-ki meet at a reserved spring, to welcome Takeru and Usui as their newest members and give them the chance to get acquainted.
- And while they're vacationing on Okino Island, the girls decide to bathe at an outdoor spring... without the guys. But the two of them escape and try to make in time to see some some eye candy. It then becomes a test of their determination, as they try to get past Yuuka's traps, to reach the spring before the girls are finished bathing.
- The titular ship and setting of Martian Successor Nadesico had a simulated hot spring on board as a sauna area. Naturally, in one episode, local pervert Uribatake and his all-male engineering crew just happen to be searching for a Jovian infiltrator when most of the female cast is using the facility. The hot springs room gets checked out quite thoroughly.
- Mazinger Z: In chapter 8 of the original manga, Kouji and his friends spending a while on a hot springs resort in a mountain. That episode was noteworthy because Mazinger-Z did not show up and it had a very funny Kouji/Sayaka moment in the hot springs (with a double Luminescent Blush included).
- Mobile Suit Gundam: The 08th MS Team has a fairly contrived hot springs scene where the lead couple have to survive in a snowfield, and the hero creates an improvised hot spring to keep them warm by melting and heating the snow with his heavily-damaged robot's beam saber. It's even more contrived in Mobile Suit Gundam SEED Destiny, where two of the female leads discuss things in an onsen on board a battleship.
- Naruto has had a few hot springs episodes, mostly played up for comic value.
- In one episode, Naruto and friends use the hot springs as an excuse to see Kakashi's real face, only to find that he bathes with his mask on.
- In the same episode, Sakura, who is presumably naked, is seen kneeling in the adjacent bath, though they chose to give her a Modesty Towel instead of Censor Steam.
- In another, the cast stops by a resort on the way back from a long plot arc. Lovable Sex Maniac Jiraiya immediately heads for the springs to take advantage of all the Fanservice. The females, in a moment of clarity decide to spend their time in the casino rather than the water. While the plot unfolds we are treated to repeated cutaways of Jiraiya sharing the water with monkeys, Sumo Wrestlers, and elderly old women. By the time the young women show up, Jiraiya has been in the hot water so long he's passed out from heat stroke.
- The post-Time Skip series Shippuuden continues in the same vein. When the new team stays at the onsen, the bathing scenes are just... bathing scenes, though we do see Naruto briefly considering peeking on Sakura. Then he's told what happened when Jiraiya tried it on Tsunade... and Sakura's her apprentice, with temper and strength to match. He decides he likes his ribs and internal organs where they are.
- In one of the post-episode vignettes, Naruto takes the Sand siblings on a tour of Konoha, including the hot springs which the Sand doesn't have. Sand ninja fan service.
- Natsuiro Kiseki has one with four fourteen year-old girls, no towels and a lot of censor steam.
- Natsume's Book of Friends pulls this in one episode in second season. Turns out that Natsume was invited along specifically because there was a Book of Friends-bound Youkai loose in the resort.
- Neon Genesis Evangelion has one settled right after a mission. It features Shinji bathing with Pen-Pen at one side, and Asuka and Misato bathing and talking at the other. Pen-Pen sees a bit more of Shinji than he probably would have wanted. Misato tells Asuka about the scar on her torso and explains how she rescued Pen-Pen from a lab where he was experimented on.
- One half of Chapter 29 in New Game! focuses on Aoba and co-workers in a hot spring.
- Most of the finales from the Onegai My Melody gradually turn into this, for some time.
- One Piece: At the end of Arabasta arc, although the fanservice there is strictly for females. When Nami catches the guys peeking on her and Vivi, she gets rid of them by flashing them, causing them to pass out and fall back on their own side. She dubs this technique the "Happiness Punch" or "Paradise Punch", depending on the version.
- There's a scene in a similar vein to a hot springs scene in the Amazon Lily arc where Luffy gets cleansed after being set on fire by the natives of the island. Despite this being Lady Land, only Marguerite, Luffy's eventual arc friend, is missing any clothing (Granted, the Amazons tend to wear little to begin with.), for no apparent reason other than law of fanservice and virtue of not being a Gonk.
- Outlaw Star Episode 23, "Hot Springs Planet Tenrei" (as might be suspected from the title) dropped its Hot Springs Episode dead smack dab in the middle of the series' climactic plot arc. This episode was dropped from the dubbed airing in the U.S. simply because of how much nudity would have to be edited out of it. However, unlike typical fanservice episodes, there is a significant plot point in this one that may lead to confusion in following episodes, as Gene obtains four exceedingly rare caster shells; that's why he really went there in the first place: he even spent most of the episode ignoring the fanservice to the point that Jim started to get worried about him.
- Patlabor :
- Patlabor had one sento episode. Which was a subversion in several ways. Firstly, it followed the male members into the bath, to locate a mad-bomber with "three moles in the left armpit". Fanservice was not a major point (though ye olde black dots got a workout), the guys never even tried to sneak a peek at the ladies' side. Ironic since the bomber was a woman.
- In a later Patlabor OAV "Versus" , the characters are only seen coming back from the springs and the whole episode is about a contest/rivalry between Kanuka Clancy (back off the bus, on vacation) and her replacement Takeo Kumagami. Which starts with trivia questions, escalates through drunken tongue-twisters, and ends up with seeing who can throw Ohta out a window better. The only character we see in a spring is Captain Gotoh (and Ohta, but he's wearing a robe).
- Episode 4 of the original OAV ("The Tragedy of L") features Captain Gotoh sending the SV2 pilots to a rural training camp, which includes a communal bath. (We get to see that Kanuka Clancy keeps a handgun with her even while she's in the bath.) During the bath scene, the water on the men's side suddenly turns red, scaring them, and from that point onward the episode becomes a ghost story. Turns out it was just a hoax plotted by the two captains, to teach the pilots a lesson about gun safety.
- Episode 20 of Persona 4: The Animation.
- There's a hot springs scene in the first-season episode "Dig Those Diglett". It initially looks like Misty is topless in the spring, but when they rise after Pikachu points out some Diglett, it turns out she has a strapless top on her bikini. Another interesting thing is that they are not in a partitioned spring.
- The anime had a hot springs episode during the Cinnibar Island arc, where Ash and Brock are on the boy's side and Misty - wrapped in a Modesty Towel is on the girl's side... until Togepi demolishes the wall between them by activating the secret door to Blaine's Gym.
- In both, the Johto Saga and the Sinnoh Saga, there were two different episodes focusing on some Swinub finding hot springs. The Sinnoh one also introduces one of Dawn's childhood friends.
- During the Lavaridge Town two-parter, Ash and his friends take a sand bath in the first episode after cleaning up the Gym's battlefield, while in the second episode, Team Rocket take a bath in some hot springs after blasting off...until they piss off three Ursaring and blast off the second time.
- The third episode of the Unova Saga is one. Right after Ash received his Oshawott, he and Iris intend to do a sand bath, only for them to later find lout that the sand will be flooded by hot geyser. The sand bath house becomes a hot springs house in the end. And Ash meets the Sunglasses Sandile that would be caught by him 61 episodes later.
- Pokémon Adventures:
- The manga had three incidents involving hot springs. One in the G/S/C arc was used by Sabrina and, later, Red. This was not due to fanservice; they were both frostbitten by Lorelei in the previous arc and needed to recover.
- And then there's the Lavaridge Gym battle between Sapphire and Flannery — yes, a Gym battle in a hot spring. Sapphire wanted to do it right then and there, however; Flannery and Mack used their strongest fire powers to slow down Mt. Chimney's complete death after Team Aqua killed the volcano, and it was now or never for the hot springs.
- Ranma ˝ has both variations; the bathhouse more often than the springs (the bath seemed to break every other week and this was sometimes just used to start the story). One time the hot spring is large and circular, with a rock outcropping providing a wall through the middle, separating it into men's and women's sides. The men try to peek around one end, and the women try to peek around the other end at the same time. They don't see anything, so they dismiss the sounds they heard as delusions.
- Somewhat subverted on Read or Die: The TV. They all go to the hot springs, but none of the main characters remove so much as their jackets. The one 'guest star' who does take off her clothes ends up brutally murdered. In the spring. And then her bodyguard activates an ancient device that destroys the springs entirely in a massive explosion. Hmm. Maybe more than 'somewhat' subverted.
- The Rurouni Kenshin anime has not one, but two onsen episodes. Both involving characters accidentally seeing each other naked.
- Ryuugajou Nanana No Maizoukin has a rare gender-swap of what almost always transpires in hot spring episodes. Yuu gets excited by the increasingly homoerotic conversations going on in the men's section, and she eventually pokes a hole in the wall to peek at them. She doesn't get to see much of her beloved Isshin, though, so she jabs Juugo in the eye for no reason.
- Saber Marionette J had a Hot Springs episode, giving a chance for gay Hanagata to rub up on Otaru wearing nothing but a very small towel.
- In Sailor Moon, Usagi and her family go to an Onsen. Then a monster shows up . . . then possessed Prince Endymion . . . and finally the other senshi. It ends with all the girls in the Onsen.
- Saiyuki: Reload Gunlock has an onsen scene: Sha Gojyo is draped with a towel; Cho Hakkai is just an outline in the water (but what an outline!!)
- Episode 5 of Saki has the characters going to one for their Mahjong training camp.
- As well as the ending episodes of season 1, which invited every member of the mahjong team to join them before the next round started up, notably leaving behind all of the male characters.
- Samurai Champloo has a few instances where the characters visit hot springs, including one where Jin finds himself in one along with an Ambiguously Gay samurai who intends to kill him.
- Sayonara, Zetsubou-Sensei has an episode in which the gang decides to detox at a hot springs facility. Fanservice is mocked, the class of highly problematic students end up losing their quirks and becoming normal... leading Itoshiki to re-tox them with highly caloric food. He then gets pushed onto the de-toxing spring himself, then dramatically disappears. He was all toxins.
- For bonus points, count how many times Kagero Usui can be seen on the girls side, mostly unnoticed by even the viewers. At one point, there are several Kagero Usuis all over the fence.
- Played with in Sgt. Frog, where one of Momoka's poorly thought-out plans to get closer with Fuyuki involves letting him win a set of four tickets to an onsen, and hoping he takes her as a guest. Most of the action involves Momoka fighting with Natsumi's friend/admirer Koyuki over the extra ticket, to the point where they don't actually get to the hot springs until the very end of the episode.
- Shakugan no Shana had the Hot Springs OVA. There was also a pool episode, but it probably doesn't count (although that one has high doses of fanservice).
- Sky Girls has one that also includes important and disturbing plot information. In a subversion of the usual "guys try to peek on the girls" scenario, Otoha accidentally knocks down the partition between the two sides and hilarity ensues.
- Subverted in Sound of the Sky, since the expected (from the preview) hot springs episode ends having less than one minute of actual hot springs on-screen.
- Sukisho: The last episode. Taking into consideration that it is more or less filler it is not surprising that fanservice should abound.
- Just about every episode in all the Tenchi Muyo! series have at least one scene in an onsen. The first TV series has Washu build one into a Pocket Dimension attached to the bathroom - a woman opens the door, and enters an opulent onsen with steaming water fountains. A man opening the door just enters the normal bathroom. Ryoko builds the onsen in Tenchi Muyo! Ryo-Ohki. Lacking Washu's ubertech (or at least, lacking Washu's ability to invent new ubertech on a moment's notice), she just built a Floating Island behind the house and put the onsen there.
- The OVA had two episodes actually dedicated to the place: Episode 4, which served to introduce Mihoshi to the cast, and Episode 9, which served as not only a sequel to episode 4, but also dedicated itself to Sasami's backstory.
- The sixth episode of Tengen Toppa Gurren Lagann had the main characters directed to a hot spring by an old man. Kamina and Simon needed the concept explained to them, as both had grown up underground. The spring turned out to be not only a trap set by the Beastmen, but a Ganmen in disguise. Also, there was a wardrobe malfunction. Followed by an explosion.
- This Ugly Yet Beautiful World had a hot springs scene where ALL of the series' female characters participated. Granted, nudity in This Ugly Yet Beautiful World is more plentiful than Ho Yay in Revolutionary Girl Utena, but the hot springs scene shows almost full nudity for all the characters, including the one nude shot of the female preteen character. Then the very next episode was a Beach Episode...
- Tokyo Mew Mew has an episode where the girls take a trip to a hot spring. However, this one is fairly devoid of fanservice.
- Transformers Cybertron manages to make use of this trope in one episode. Notable for it taking place in Alaska.
- The Wallflower had an episode set in a hot spring, which featured a murder mystery, Sunako generally creeping out everyone staying at their hotel, and a truly awe-inspiring game of ping pong.
- The Weatherman Is My Lover features an extra where the cast and crew of Chou Hayaoki TV have what amounts to basically a school field trip to an onsen.
- WORKING!!: Subverted (or at least weirdly played). The hot spring episode does not feature any hot spring scene at all (or 1 if you count the foot spring).
- World Conquest Zvezda Plot episode 9 features both the Villain Protagonists and Hero Antagonists taking a vacation to in the same hot springs in their civilian identities, resulting in some of them discovering each others' secret identities.
- Yu-Gi-Oh! GX: Judai/Jaden and allies visit the school's onsen, and no intended fanservice is on.
- Yuki Yuna Is a Hero had a hot springs segment in episode seven, which was mostly a beach episode.
- Ghosts of Evangelion: During a story arc set in 2021, Shinji and Asuka take a trip to Okinawa and take a bath in a hot spring.
- Once More with Feeling: After fighting Sandalphon in episode 17, the cast spends the rest of the day at a hot springs resort. During that time, Misato apologizes to Asuka for risking her life during the battle, and opens up to her about her parent issues.
- One Piece: Parallel Works had Yuki-Rin, Kazuma, Heathcliffe, and Aki going to one during the Five Days of Fun Arc. It didn't really have any Fanservice, but Heathcliffe's backstory and Yuki-Rin's amnesia were discussed among the Capricorns.
- The Berserk fanfic "Three Nights" pulls this off with Guts, Casca, Pippin and Judeau finding a natural hot spring on their way to Wyndham to rescue Griffith. After Pippin and Judeau bathe off-screen, Casca aggressively but cleverly convinces Guts to take a bath by luring him to the hot spring - with her as the bait. The tone of the fic avoids this scene from turning into a lemon, but Guts and Casca do share a very intimate moment with each other.
- Friendship Is Magical Girls has "Golden Week" the two-part episode about three-quarters of the way through the Magic Arc, wherein the team travels to a hot springs spa in the countryside to relax and bond as a team. Technically speaking, they're only in the hot springs in the first part, however.
- Hotspring Souls! is a Soulsborne (Demon's Souls, Dark Souls, Dark Souls II, and Bloodborne) crossover comedy fic that plays with the idea of the games' protagonists having a weekend vacation at an inn/hotspring in the countryside.
Films — Live-Action
- In the 1954 film The Bridges at Toko-Ri, Harry Brubaker (William Holden), an American fighter pilot stationed in Japan goes to a public bath with his wife Nancy (Grace Kelly) and their kids. No nudity is shown, since it was 1954, but they seem to be nude, and act very shy when a Japanese family enters and disrobes for the bath next to them. Later, they relax. Pretty daring for 1954.
- In The Yakuza, Tanner enlists the aid of his old army buddy, Harry Kilmer, to go to Japan and rescue his child. Or, so it seems. There's a bit of tattooed knife violence and implied nudity in the bath house.
- Memoirs of a Geisha has the titular character take some high-ranked Americans militarymen to a onsen resort.
- Star Trek: The Next Generation, of all things, had one. Troi, Troi's mom, Worf and his boy Alexander all hopped into mud baths on the holodeck a couple of times.
- Xena: Warrior Princess had one in season 5 when they stopped by an Wild West-style town.
- Dr. Quinn, Medicine Woman when Preston decided to open a spa in his hotel resort. He thought he found a gold mine and an attraction for tourists, but it was most enjoyed by local ladies who went there to mess with him a bit.
- A recurring tradition of the Tales Series.
- One of the inns in Tales of Symphonia is also a hot spring, and going there with Zelos in the party after a certain plot event results in a cutscene where Zelos tries to spy on the female party members while they're bathing. Lloyd shows up and chastises him, but the ladies hear him and Zelos runs off, leaving Lloyd to take the blame. The game even gives Lloyd the title of "Peeping Tom".
- The same kind of situation happens in Dawn of the New World if the party goes to the hot spring at one point and have the ladies go in. Zelos tries to spy on the females (while Emil and Lloyd give him crap for it), and Lloyd gets blamed again as he's the only one didn't run. When the males take their turn, Marta tricked everyone but Emil into not coming in so she could spend time with him. When Emil finds out he ends ups calling everyone else attention. Naturally, everyone but Lloyd decide that Emil must have planned this even though both claim otherwise (and them all knowing how openly affectionate Marta is towards Emil), and Emil also gets the title "Peeping Tom".
- The original bathing scenes in Tales of Phantasia had peeping on both sides: Chester on the male side, and Arche on the female. Chester also gained the title of Muscleman, Mint the title "Boin~chan". Tales of Eternia had no wall-watching, although Reid did have to smuggle Chat into the men's dressing room to get one of her skills, which leads to a rather unfortunate scene between her and Keele. Also on a seperate occasion, Meredy decided to bath near the man's side instead, and Hilarity Ensues.
- They're at it again in Tales of Vesperia. There are three different scenes. To get the first two, you need to pay 300,000 gald for the first and 600,000 gald for the second. During the first two, Raven keeps trying to peek at the woman's side of the spring, with little success. The third visit is free, During the third, the party winds up working there and at the end they all get costume titles.
- In the PS3 version, there were a few scenes added for the hot springs to accommodate Flynn and Patty being in the party.
- Actually, the second time Raven manages to see Judith completely nude, and coerces Karol into being his accomplice. Judith appears to be aware of this, but utterly nonchalant. In the the final scene, after returning with the new costumes, Raven and Rita have a shouting match through the partition.
- And before Vesperia, Tales of the Abyss also had it which had two scenes one gives you new outfits and another gives Guy the title Naughty Devil due to him groping both Tear and Natalia after being shoved by Luke and Jade for an experiment.
- While absent from Tales of Xillia, the sequel made up for it by making the hot springs event an animated cutscene. The party gets treated to it as a reward for paying off Ludger's 20 million gald debt. However, the hot spring they go to ends up lacking a partition, forcing them to improvise by having the guys (Rollo included) cram themselves into a water-filled, super-sized Tipo while the girls get to bathe comfortably. Hilarity and fanservice ensue.
- Present in Tales of Berseria, with the added effect of a "Freaky Friday" Flip.
- Riviera: The Promised Land and Yggdra Union both feature a hidden "hot springs scene" where the games' female characters appear naked. Bafflingly, the American version of both games' hot springs scenes actually shows MORE than the Japanese version.
- One of the jokes about Riviera is that the only way to tell gender for some NPCs is whether or not they appear in the bathing scenes; they are female if they appear in one, and every female appears in one.
- Lunar: The Silver Star features sex segregated springs, with the male-only one much easier to reach than the female-only one. This is also a bit of a Guide Dang It since you (naturally) need to bring soap. It's only available for a very short time at the very beginning of the game. Long before there is any hint either spring exists.
- The sequel Lunar: Eternal Blue features baths instead. The clueless Lucia walks into the male bath as well, much to Hiro's surprise - and Ruby's chagrin.
- Part of the Mt. Gagazet sequence in Final Fantasy X-2. (But only as a reward if the player approaches the area in a particular, stealthy way. If they approach the Fem-Goons directly, then the scene is skipped.)
- Later on, as the Gullwings install cameras all over Spira, they get to watch nearly the entire cast of NPCs show up at the hot springs at various times. Subverted as all the NPCs keep all their clothes on (most probably due to budgeting). The PC sequence does provide briefer outfits for the three girls, although in Rikku's case it can be argued she ends up wearing more than she usually does.
- Shin Megami Tensei Persona 3 and Persona 4. The former also involves a Stealth-Based Mission.
- Averted in The Legend of Zelda: Twilight Princess, where there are two hot springs inhabited by Gorons, but there is not much focus on them other than for healing.
- The remakes of Pokémon Red and Blue (FireRed and LeafGreen) feature a hot spring that heals Pokémon. This being a Pokémon game, no fanservice is involved.
- Hot springs also appear in Pokémon Ruby and Sapphire/Emerald, though there is no Fan Disservice here, either. (The NPCs in the Lavaridge hot spring are all elderly.) Just outside the spring, an elderly man is warming himself in some heated sand. Talk to him, and he'll remark on how good the sand feels—until a Pokemon bites him in the butt. Perhaps dampening the comedy: the primary sand-dwelling Pokemon around there is Trapinch, a giant antlion larva with bear trap-like jaws.
- Pokémon Mystery Dungeon: Explorers of Time/Darkness/Sky, too, but since all of the characters are Pokémon... yeah.
- Harvest Moon:
- The original Harvest Moon for SNES features a hot spring hidden in the mountains. Your character can relax there and you can even bathe with potential wives for relationship points. There's also a scene you can get with Eve where you accidentally come across her in the hot spring.
- Harvest Moon: Back to Nature has a hot spring near one of the mines.
- Stardew Valley has a hot spring. It is heavily inspired by Harvest Moon.
- Present in all of the 5 generations of Record Of Agarest War. The other present thing with this one is that Winfield gets beaten up by Borgnine every single time.
- There's a hot spring side-quest in Luminous Arc 2. And another in Luminous Arc 3. The reward for undertaking the quest is permission for your party to use the hot springs for a while.
- Partially averted in Ōkami, in which Ameterasu tries to go to a hot spring to relax, but the spring isn't running. You have to go on a mini quest in which you dig underground to get it flowing again.
- In Breath of Fire IV there is a scene that was removed from the international releases of the game, featuring Nina and Ursula visiting a hot spring during the camping scene in the Tidal Flats. They ask Ryu to stand guard, Nina makes a comment along the lines of "Wow, I had no idea you were so big!" he gets curious, Hilarity Ensues, unfortunately the clip seems to have gone missing.
- Stage three of Touhou's second fighter Hisoutensoku starts at the "The Geyser Underground Center Entrance" which Marisa describes as a hot spring. Considering this hot spring is directly a product of Touhou 11 Subterranean Animism, and the next boss fight after Marisa takes place in the nuclear reactor powering the hot spring, this scene does not come out of nowhere at all. And no Fanservice.
- MOTHER 3:
- Hot springs are primary equivalent to the Trauma Inn. There's even a little sign by most of them with a haiku on it detailing the location (though the syllable count is rarely correct). It's played with on Tanetane Island, however; while the human protagonists are hallucinating after eating some strange mushrooms, what appears to be a lavishly decorated hot spring is actually a pool of toxic-looking sludge, which Boney will refuse to follow you into (should you choose to do so). The actual hot spring is right next to it, though inaccessible until you've 'sobered up'.
- As for a Hot Spring Episode, there's Lucas's meeting with Ionia in a hot spring, wherein Lucas learns PSI from Ionia... somehow.
- Present in Bleach: The Third Phantom. If you chose to play as a girl, you get more scenes than if you chose the boy.
- In Asura's Wrath, Asura's old master brings him to a hot spring to recover from annihilating Kurow's airship fleet before he fights him. The goal is to get Asura drunk enough that he tries to grope the handmaiden he has serving him, before getting waylaid and knocked out cold by Augus.
- Each game in the Suikoden series has an onsen built in the player's headquarters, and various optional scenes can be viewed by bringing the right combinations of characters.
- In Muramasa: The Demon Blade, the male protagonist Kisuke and the female protagonist Momohime can have a series of humorous encounters with each other at a hot-spring.
- On Chapter 16 in the Japan route of Super Robot Wars UX, the teams go into hot springs in the hidden ninja village. Sakura asks Sonshouku from SD Gundam Sangokuden if she will rust or not. No official art.
- Fire Emblem:
- In Fire Emblem Awakening, there's the Hot Spring Scramble DLC scenario. Chrom and the Badass Crew stop by an onsen-like bath house, some charas (Lucina, Severa, Owain and Inigo) get dolled up in yukatas, and then the monsters attack the onsen so the group must defeat them all before they have a chance to enjoy the springs.
- Fire Emblem Fates goes a step further by allowing you to construct a hot spring in your personal castle, letting you experience this between each battle with a random group of your units and also gives you free control of the camera. As it's not gender segregated, there's a chance the avatar might walk in on the opposite gender bathing, upon which Hilarity Ensues.
- Project X Zone 2 features an optional cutscene that takes place in the hot springs in the New Game+.
- One apparently volcanically active zone of Skyrim, near the Elder Gleam Sanctuary, features steaming hot springs and water pools, as well as a Hunters' tent. When this one is occupied, hunters may be met clad only in the game's default underwear (unless you activated the appropriate mod, you pervert), comfortably bathing in a pool. Puzzlingly, if the player unclothes for the sake of roleplaying and tries to bath with the hunters, they will still make amused comments on the Dragonborn's own nudity.
- The Little Busters! Drama CD takes place at a hot springs which they go to after setting off on their own field trip at the end of the game. But since it's, y'know, audio only plus a couple of individual art pieces, there's not much fanservice. In fact, Kyousuke at one point tries to get the guys to peek at the girls' side - not because he himself is all that interested, just because it's a thing that happens in anime - but in the ensuing reluctance, the only one who ends up peeking is Kurugaya, who then gleefully tells the other girls about Masato's, um, assets, while he wails in horror.
- There's a brief scene in Demonbane, during the Beach Episode. Whoever is Kurou's developing Love Interest walks in on him in the spring (it is explicitly described as a mixed bath), and all three have different reactions: Al covers her front with a towel but is otherwise nonchalant, Ruri (who is heavily drunk) is utterly shameless and makes advances, while Leica is embarrassed and requests Kurou turn away, and they sit back-to-back.
- In DevilBear, the Daivas recover from a fight by skinny dipping in a hot spring.
- In one El Goonish Shive strip, the characters recapping the plot to each other is covered up by scenes from the "Lucky Bunny Bounty Show" — both of which involve the male character accidentally walking in on the female character in an onsen.
- In the creators' commentary for A Miracle of Science, a Hot Springs Strip was repeatedly referenced, originally in an April Fools joke.
- Not Quite Daily Comic has a fanserving Onsen arc that ends in a dramatic battle.
- Red String, which faithfully uses all the tropes of shojo manga, features an entire chapter about the cast spending a few days at an onsen. One of the male characters sees more of the anatomy of three mothers than he intended to.
- Alien Hand Syndrome: Initially a very brief one for our heroines Erin and Mina, because it turns out that two guys are already bathing in it. Shrinking Violet Mina is mortified even though she's wearing a Modesty Towel. They return to the spring the next day, even though by then it's raining.
- The guys relax at the onsen in scene 5 of Seiyuu CRUSH!, Feel So Good. Where we see a little nudity, some toe licking, and find Kaji and KoiZ in a secluded spot.
- The Animesque animated series Totally Spies! has an episode where the girls take a vacation to a ski resort and relax in a hot tub. It's not long before a snow-and-ice gimmick villain shows up to ruin everything.
- In the Futurama episode "Teenage Mutant Leela's Hurdles", the crew takes the Professor to a spa to get a tar bath because it makes the bather younger.
- The Smurfs episode "Smurfs On Wheels" is basically three Smurfs on a hiking trip versus a group of Smurfs riding in Handy's new Smurf Wagon in order to get to Dreamy Steamy Springs. Naturally the hiking Smurfs get there first while the wagon-riding Smurfs only get there by way of Brainy's driving only for the vehicle to end up heading for the waterfall.
- Avatar: The Last Airbender has Uncle Iroh in a hotspring, then spending most of the episode wearing a loincloth.