In the movie. Though that was more of a bastardly Mickey Finn trick.
In the anime, to pass the wind crystal cure to Belldandy.
There's a scene in the manga where Urd locked lips with Belldandy to pull an ailment (an "Ahem Bug" causing laryngitis) out of her. Keiichi walked in just in time to be paralyzed by the sight.
In Ai Yori Aoshi Aoi holds Kaoru close in a very early episode to help Kaoru get over his cold. It could be said that she performs acts of intimate psychological healing as well, over the course of the series. His Achey Scars hurt less because of her influence.
In Arata: The Legend, volume 12 has two instances happen in quick succession of each other. When Hinohara is poisoned and rendered unconscious, Kotoha lies on top of Hinohara in just her underwear in order for her powers as an Unemezoku to take full effect. Shortly afterwards, Mikusa gives Hinohara medicine through mouth-to-mouth transfer.
One scene in Ayakashi Triangle after a battle has Suzu walking in on Reo rubbing ointment all over Matsuri's naked body.
Reo: I have a special ointment that works great on bruises. Shirogane: You don't have to apply it like that though!
In Episode 8 of Battle Girls: Time Paradox Nobunaga gives an unconscious Hideyoshi medicine by kissing her.
Averted rather horrifically in the manga version of Battle Royale when Mitsuko Souma rapes a mortally wounded classmate while genuinely believing that this trope is in effect. Unfortunately, all she accomplishes by doing this is making his death even more agonizing than it already was.
Berserk: Casca is forced by her commander to lay with Guts like this after his first clash with the Hawks, which leads to a great deal of resentment on her part for much of the series. Guts returns the favor about halfway through the series after she gets hurt in their first fight with the Blue Whale Knights.
Female lead Misao is plagued by demons trying to kill and maim her. The lead male and local Fetishized Abuser Kyo can heal with his tongue. Do the math.
Misao's Kiss of Life gives energy to whomever she's kissing, so she oftentime does this to Kyo to help heal him if he's injured in a fight.
In a later chapter Misao falls ill and can't warm up even with four blankets on her. Kyo finally strips down and warms her with skin-to-skin contact.
When Ichigo is rescued and revived after his first confrontation with Byakuya, he wakes to find Urahara's burly assistant Tessai lying on top of him. Hilarity Ensues.
Later in the series, Mayuri Kurotsuchi revives his dead assistant / daughter Nemu by doing something off panel that horrifies and embarrasses both Renji and Ishida—we don't see what happens, aside from one panel with Mayuri wiggling and a lot of sound effects involving Nemu panting and screaming. Ishida protest loudly about this much to Mayuri's confusion. Mayuri then says Renji and Ishida must be total perverts to think that's what was happening. Nemu, meanwhile, is restored to full, beautiful health—blushing deeply. The anime later goes on to have a fieldday with this.
Used by Saya and Haji to give each other their blood in different situations during Blood+. The fact she lets out a little moan the first time he does it says all the rest...
In A Bride's Story, Amir does this with her young (and very embarrassed) husband during a cold night in a yurt.
In Blue Ramun, members of the Blue Ramun tribe can heal most injuries and ailments with their magical blood, but even close physical proximity to a tribesmember can promote healing. In Chapter 15, a tribal elder suggests a tribe member sleeps next to Guard Captain Eagle while he recovers from being stabbed and poisoned. Jessie ends up taking that responsibility, after being the one to heal him of the poison with a bloodied kiss.
In episode 15 of Brigadoon: Marin and Melan, Marin consumes a mind-altering chocolate. Melan is able to neutralize the reaction by feeding her the antidote orally (that is, mouth-to-mouth style). This leads to some Japanese wordplay, since the words for "kiss" and "neutralize" sound very similar. Marin is considerably more flustered about the whole thing than Melan is, since kissing is a totally foreign concept to him.
In Campione! the titular warriors are resistant to external magic, including healing and knowledge transfer. As such the only way Godou's girls can heal him or transfer knowledge of a god is via kissing which usually ends up rather more passionate than seems strictly necessary. Similarly Godou's protection Authority can only be bestowed on the girls via an intense make-out session.
The anime of Chrono Crusade has Chrono coming down with a fever after he uses too much astral energy. Rosette goes to a Fortune Teller to find out how to heal him—and she whispers a "folk remedy" into Rosette's ear. Of course, it's a kiss. Towards the end of the episode, Rosette tries it out of desperation, and the next morning Chrono's right as rain. (Of course, he had passed out right before she tried it, so he had no idea that Rosette used a "magical" cure.)
Prince Vald passes an antidote to the magician Halvir this way. Unbeknownst to Vald, Halvir's been having sex with him while he's controlled by the demon from his cursed sword, so he can't help feeling there's something... familiar about Halvir's lips.
Halvir decides early on that it would be a good idea to have sex with Vald in demon form, as this will both drain the demon's energies and feed his own magic; this causes complications later on, though not all of them negative.
In Dear Brother, an ill and drugged up Rei takes an icyShower of Angst. Her best friend Kaoru stops her, drags Rei to her bedroom, and then strips both of them naked before the two get into bed so Rei can warm up via body heat.
Laios of Delicious in Dungeon. His abilities as a healer are very basic and he doesn't have a tool like Marcille's staff, so if he is gonna perform any curation he has to touch all over his target with those big hands of his. Laios is fairly embarrassed by this, which as Marcille explains, is a very common issue for rookie healers.
Demon King Daimao: In one of the specials, Akuto ends up trapped in one of the school warehouses during a snow storm along with Junko, Fujiko and Keena. Fujiko uses the body-to-body warmth excuse to strip naked and jump on Akuto, which Keena quickly joins in. Junko is a bit more reluctant, but between that and freezing, she ends up complying too, until the door opens and Korone comes in.
In Dragon Ball Super, an injured Future Mai is unconscious, so Future Trunks feeds her a Senzu Bean by chewing it and locking lips with her.
In Dragon Crisis!, dragons can apparently heal humans by kissing them. In one episode, when Ryuji is severely injured in battle, Rose kisses him and he instantly heals.
The manga Eden's Bowy has a uniquely deliberate example of this. The heroine Elississ has the ability to heal anyone simply by holding her hands out above their body; but when hero Jorrne is hurt, she opts to heal by licking his wounds. Other characters have noted this on multiple occasions, some with knowing amusement, some with bitter jealousy.
Elfen Lied has Lucy and Kouta in their childhood, who played together in a river, then, after removing their clothes to dry, shared back-to-back body heat.
Parodied in one episode where Excel prepares to share her body warmth with a frozen-solid Hyatt in a way that obviously plays up the sexual aspect. The heat created was apparently sufficient to not only remove Hyatt from a block of solid ice, but also cause an explosion. Hyatt winds up fine after the treatment... but Excel, doing the treating, suffers full-body frostbite.
In the manga, Iwata is ecstatic at the possibility of having to administer CPR on Matsuya while they're searching the sewers of Fukuoka. She wakes up in time to stop him in his tracks — but he does have to perform CPR by the end of the story. On Sumiyoshi.
In the latest arc of Fairy Tail, Lucy is told by Porlyusica that, as a last resort to keep Natsu's body warm, she might have to strip naked and lie on top of him. Lucy feels very reluctant to do this, but she ultimately complies.
It was done by Louise in The Familiar of Zero, who opposed it in the first place, to Saito. But when Derf the talking sword tried to tell Saito what happened, she buried the sword.
In New Fist of the North Star, this trope is invoked in a way that makes the entire series not very believable. Near the end of the series, Kenshiro is trapped by Seiji and put in a barred room. He continually tries to kick his way out of the bars, but it's ineffective. The only way he can get out is to use a technique that requires him to meld his chi with Sarah in order to produce the power needed to shatter the bars. They get pressed together in a very suggestive manner, as they gather the energy needed. It's Kenshiro, the man who has walked through collapsing skyscrapers, burning buildings, the DESERT, and beat up tens of thousands of mighty men with ease that would probably be outright fatal to master martial artists like Batman, Captain America, and Iron Fist in the zero prep time + no weapon but your body confrontations that he would often find himself in. And this cage that Kenshiro is in: it's not any supermetal or anything designed before the war, it's not specially designed to absorb extreme shocks or anything, there are no force fields or nano fibers or any of that shit involved. It's just made of cast iron, something Kenshiro was more than capable of handling in the very first episode of the series.
Spoofed in a Freezing omake. While stranded on an iceberg, Satellizer and Holly strip and hug Kazuya and Louis, then rub against them at super speed. The two girls then decide to compete to see how fast they can move and how much they can warm their respective partner. Eventually, this generates so much heat that the iceberg breaks, sending them all tumbling into the ocean.
In Full Metal Panic! Sousuke, while pretending to be dating Mizuki, kisses her in order to maintain the illusion that they were going out after asking "Is that when you put your lips to theirs?" After being yelled at for kissing he says " I have kissedall sorts of men before. Some survived and some died." After Kaname realizes what he means all is forgiven.
At the beginning, Takiko finds a girl all tied up. She rescues her from demons and takes her to an inn. The girl has a fever, so Takiko decides to "absorb her fever," by stripping to the waist and climbing into bed with the girl. Who turns into the male Uruki...causing Takiko to freak out when she finds out.
Some time later, Takiko almost gets encased in magical ice and after her Genbu no Miko aura keeps her from being trapped, she gets severely ill. Uruki returns the favor by stripping to the waist and sharing body heat with her, which greatly embarrasses Takiko but soon almost leads to a Love Confesion.
Ren delivers medicine to Kazuki like this in Get Backers. Later, the trope is mocked to an extent when she is told to do the same to Emishi who promptly sticks his tongue in her mouth.
In the Divine Design arc, it is revealed in the middle of a resurrection ceremony that, for it to work, Ban has to kiss the spell's target full on the mouth. This produces some annoyance with Ban's male co-lead, Ginji, as the manga plays up a healthy amount of Ho Yay between the two. Might also count as a medicine kiss, as Ban had a mouthful of blood and that was previously established as a key component of the ceremony.
Great Teacher Onizuka gets into a sleeping bag to share his body heat with Urumi after saving her from her suicide attempt. Unfortunately for him, he's too unconscious to enjoy the act.
Devil healing magic works this way. So, when Issei is gravely injured after becoming a Devil, Rias takes off all of their clothes and sleeps next to him the entire night.
Asia's Twilight Healing Sacred Gear requires her to place her hands above (or touching) the injured zone in order to heal it.
After Issei's Engagement Challenge against Riser, he's left with a dragon-like left arm that cannot be restored to normality with Twilight Healing. The solution? Rias and Akeno sucking the excess draconic energy every once in a while through his fingers. Literally.
After his first berserk juggernaut drive causes a serious drain to his life, Koneko begins to engage in a similar healing method, pouring energy into him while wearing nothing but a flimsy robe. On top of this, she frequently offers to use an even more effective method in which she transfers energy while having sex with him.
In the Brazilian manga based on an RPG setting Holy Avenger, Lisandra's procedure to apply healing spells is through kissing the targets. The explanation is that, as she was raised by animals, that's just how she interprets the motherly figure of a wolf licking her cubs' wounds.
Michiyo Akaishi's Honoo no Alpen Rose: After escaping from the Count's castle via jumping into a river and hiding in an abandoned shack, an injured and soaked wet Lundi is this close to suffer hypothermia. His girlfriend Jeudi lays him down on a pile of hay, strips both of them naked and lays with him to warm him up. It works, and the next day Lundi is a little weakened but basically fine.
In Ikki Tousen, Ryoufu does this to her bedridden ex-boyfriend Saji, giving him a pill through a kiss.
Infamous lech Miroku from Inuyasha once requests this. Kagome says "Yes, of course!"... then turns to the little fox boy Shippo and says "Take care of him, will you?" Suddenly Miroku thinks he can take the medicine okay by himself....
Jubei-chan: This is apparently the only way that Jiyu's magical fever can be cured. It's done by her dad, who takes off her clothes while she's unconscious, immerses himself in ice water, then lies on top of her (clad only in boxers) as the water steams off and he gets burned. Then runs back for more ice water. This repeats until her fever breaks, at which point he collapses, still lying on her. She wakes up and sleepily mumbles that he's a pervert, but doesn't push him off.
In Kanokon, both Chizuru and Nozomu do this to the resident cute little boy and odd woman magnet after the entire school gets frozen. But, Kanokon being Kanokon, they up the ante by taking every chance to fondle, rub up to and generally molest him, up to and including a (heavily implied) handjob. From both of them. At the same time.
When Ayumu faints of smoke inhalation in Life (2002), her best friend Miki is forced to give her water mouth-to-mouth to help her recover.
Subverted in Lilim Kiss. The titular boy accidentally released Sealed Evil in a Can a scintillating succubus. The Succubus requires life force to perform and usually forcibly gets it by kissing the protagonist. Said act almost always leaves said protagonist not being able to move for at least a day from exhaustion.
In the 1981 anime adaptation of Little Women, Mr. March is so sick, Mrs. March has to give him his medicine via mouth to mouth.
Used in Loveless: given the fact that the connection between Sacrifice and Fighter is crucial to winning the magical battles it follows that Soubi should kiss Ritsuka in the middle of a showdown. This device is probably a means of allowing for intimate contact that isn't too intimate, after all Ritsuka is only 12.
In Lupin IIIFarewell to Nostradamus a hypnotized Fujiko got naked and warmed Lupin with some good ol fashioned female nurturing and warmth.
The first instance occurs near the beginning of chapter 16, when Ms. Aki treats Kai at her office. She dons a fetish style nurse's outfit, then mounts him in the '69' position. Despite Kai's inquiry, no explanation is given for why she did it that way and it's never discussed again.
Chapter 57 contains a straighter example between Yuuka and Takaki. A flashback panel at the beginning shows Yuuka spooning against Takaki, with one of her hands between her legs. Takaki is seen with her back arched, while blushing and biting down on her finger, as light radiates from where Yuuka is touching her.
Martian Successor Nadesico: In the final episode, in order to combine their nanomachine fields and get enough reaction to boson-jump the entire ship, Ms. Fressange proposes that Akito and Yurika kiss. Ruri suspects after the fact that any sort of physical contact would have worked and Fressange was just trying to end the Will They or Won't They? dance.
Performed by Suu of Monster Musume to cure the main character of his fever. Specifically, she uses her unique biology to filter her own water and breast-feed Kurusu with it.
By the same author of the above example, a well-intentioned but misguided Aero attempts to perform this on Mamoru in Deadline Summoner. She doesn't seem to understand that doing this to a person who has broken almost every bone in his body is a bad idea. Fortunately, the rest of his harem arrives to stop her... if only because they don't want her getting ahead of them.
Akira Okuzaki does this to Takumi Tokiha in both My-HiME and My-Otome, when he has a seizure that doesn't let him swallow his pills. She puts them in her mouth and then presses their lips together so she can give the meds to him properly.
Rue uses this technique to give water to a dehydrated Mytho in Princess Tutu, in a flashback sequence meant to cement their relationship. Considering that she was only a little girl at the time, though (and Mytho might beReally 700 Years Old), it can come off as a little squicky.
In the manga when Ikuto is poisoned during a visit to Kunai's house, Shinobu feeds him the antidote with mouth to mouth. It annoys Machi, surprise surprise.
A giant snowball chases Ikuto and Michiru helps him escape. It turns out to be a snow fairy named Konayuki who's trying to bond with him, but only freezes him because he's just a regular human. To warm him up until Koyuki can get Tsurara's help, Michiru takes off their clothes and hugs him tight. Suzu, who was worried about him, is furious when she finds them.
Karin from Naruto can heal people, but only if they bite her (during which she seems to get a rather elated look). Unfortunately for her, this also leaves a permanent bite mark any time she uses it. While you might interpret it in the manga to just be pain, the anime makes it extremely blatant that she's aroused.
In both series series, the "only convenient way" for Negi to enact a magical pactio contract with someone is to kiss them (alternative methods aren't gone into, although one implied method was "open veins, swap blood"). This has been done for healing purposes as well as power-up, including when Konoka kissed Setsuna in order to save her life in the end of the first series.
Later in the manga, Konoka did a nakedTransformation Sequence in which she held Negi closely from behind in order to seal up the wound through his chest.
In the manga, Shuzuku (a water demon in the form of a little girl) rubs her naked body against the unconscious male lead's back to heal his stab wound, then admits after the fact that she just did it that way because it felt good, when a more mundane form of contact would have worked just as well.
In the anime, it is his chest, although she does keep her panties on.
In a later chapter, Himari gets in a battle at a ski lodge and ends up covered in snow. She claims to be extremely cold after the fight is over in the hopes that Yuuto will use his body to warm her up. She is extremely disappointed when he helps her get to the lodge's natural hot springs instead.
In the Outlaw Star episode "Forced Departure", Melfina cures Gene of poisoning from darts by taking him into the navigation chamber of the show's titular ship. In the chamber Melfina is always naked and Gene is seen wearing boxers just as much as her. They float together in an embrace as she cures him.
In PandoraHearts Retrace 23, Vincent feeds an antidote to his servant Echo like this to prove that it works. Break probably didn't give that antidote to Sharon this way, though.
The manga PQ Angels required the heroines to kiss to transform.
Ranma ½: Densuke will only take his vitally-needed medication if it's given by a pretty nurse. Weird circumstances make this nurse out to be Ranma. And Densuke does his level best to get the medicine delivered by this method. He fails with Ranma, but the medicine is delivered by this method (by a male gonk of a doctor).
It's a Medicine Kiss used to restart the android during the showdown with the Big Bad.
Natsuko's solution to Honey's blue-screening in the previous episode, after realizing that the Robot Girl's skin is reacting to her touch in her otherwise lifeless body, is to strip completely naked and embrace Honey as intimately as she possibly can without actually having sex with her.
Re:Monster has a strange case of this in chapter 43. The main character, a powerful ogre with human-level intelligence and comparable morality, has impregnated two of the human women in his harem. By the time they start showing, their unborn babies have grown to the point that they're absorbing nutrients too fast, threatening the mothers' lives. Normal food is no longer sufficient, so the ogre tears his arm off to feed them. The human women are understandably reluctant, so he chews his own arm up to force-feed them mouth-to-mouth.
In chapter 74 of School-Live!, Yuki gives a seriously ill Kurumi water mouth-to-mouth.
Sekirei require a kiss from their Ashikabi to use the full extent of their powers.
The Seven Deadly Sins has both Ban and Elaine fatally wounded by a Red Demon, and only the Fountain of Youth (which Elaine was guarding) can save them, but there's only enough for one of them. They both want each other to drink from the fountain and save themselves, so Elaine takes it into her mouth, then kisses Ban to force it down his throat.
7 Seeds uses the sharing a blanket in order to warm up a few times. Once between Ango and Arashi during the Minor Heat arc. And another time between Koruri and Haru during the Ocean/Mountain arc, with them stripping down to share body heat.
In one episode, during the Hinata family's stay on Momoka's private beach resort, Momoka tries to get Fuyuki's attention by pretending to drown so he'll perform CPR on her.
Momoka invites Fuyuki his family to the Nishizawa family's private snow resort in the mountains, where with the help of a few high-tech snow-making machines, she plans to stage a blizzard and get stranded in a cabin with Fuyuki, where he'll hopefully perform the "nude body-warmth sharing" trick with her. Of course, between Fuyuki's Selective Obliviousness about Momoka's crush on him and the meddling of the Keroro Platoon, things don't go quite according to plan.
In the Shaman King manga, Ren has to be cured through that by Jeanne. Due to Ryu's misunderstanding (he thought that Jeanne was going to have her first kiss with Ren), the poor fin-haired boy couldn't be completely healed, and became scarred. Actually, it was Shamash who was healing him with a kiss... Not that Jeanne doesn't end up married with Ren in the end, anyways. Or at least, as the mother of his kid.
Seen during the climax of Lisara's battle with Ilia, in episode 4. Her partner, Ryosuke, restores her energy by thrusting his pelvis directly into her face, which causes her to become visibly aroused by it. Lisara proceeds to 1-shot Ilia.
Subverted in episode 7, when two of Lisara's maids (Hild and Ulus) try to heal Ryosuke by having sex with him. Hild straddles him and is seen grinding him, beneaththe bed sheets. But he forces them off of him before they could heal him completely.
Neko-Ichigo has to kiss someone, anyone, to turn back to normal. This causes a problem as the only one she actually wants to kiss is the one that she's trying to keep in the dark about her identity.
In one episode, Retasu kisses an unconscious Ryou to activate the Mew Aqua required to save him.
∀ Gundam: Harry Ord gives Lt. Poe Eiji some anti-radiation sickness medicine this way. What makes it strange is that she was conscious (if sick) and still fully capable of swallowing a pill herself.
Ichika of Waiting in the Summer has a high-tech alien healing device; it ought to avert this trope, except she apparently has to kiss the person she wants it to heal.
Yokohama Kaidashi Kikou: Near the end of ch. 2, Takahiro gets caught in a thunderstorm and is soaked by the rain. He takes shelter in a barn and is still extremely cold even after shucking his sodden clothes, but is suddenly embraced by the Osprey, and falls asleep in her arms, finding her smile not as scary as he did when he first saw her. When he wakes up, Alpha finds him dressed and dry.
◊ sucks the poison out of his body via a kiss. With no ill effects due to her own poison powers, but with plenty of pleasure since she calls it a "treat".
