Miki Koishikawa's parents pull her aside one day after school to announce to her that they're getting a divorce. It seems that they met another couple on their recent trip to Hawaii, and hit it off so well that both couples want to divorce each other, swap partners, and remarry. Even more incredibly, the four want to all live together in one household... and the other couple have a boy Miki's age, the handsome Yuu.Miki is dead set against the plan, but Yuu says that he's okay with it which makes her even more upset. The following day, Yuu enrolls at Miki's school. Miki has an accident in PE class and faints, and as she lays in the infirmary pretending to be unconscious, Yuu comes to check on her... and abruptly kisses her. Romantic Comedy-Drama ensues from then on, as Miki is confused over her feelings and Yuu doesn't exactly help with his behavior, while other suitors of them try to break off their bonds, and for worse they have to deal with both their budding "love" as well as handling their parents's behaviors.Marmalade Boy (ママレード·ボーイ Mamarēdo Bōi?) is a shōjo manga by Wataru Yoshizumi. It was published by Shueisha in the magazine Ribon from May 1992 to October 1995 and collected in eight tankōbon volumes. The series was adapted by Toei Animation as a 76-episode anime television series which aired on TV Asahi and Fuji TV in 1994 to 1995. This was followed by a prequel theatrical anime movie in 1995. The series was also adapted as a 30-episode live-action television series that was broadcast in Taiwan in 2002.Now has a Sequel Series titled Marmalade Boy Little that follows Miki's and Yuu's half sister and brother.
Ascended Extra: Kijima, Yuu's boss at the Junk Jungle. Started out as a one-panel character stuck in there just to let Miki know that Yuu quit his job so she wouldn't be home alone during their parents' honeymoons, became an all-wise mentorly type who had a history with Ryouko and Nachan.
Badass Adorable: Meiko, in a (generally) non-violent fashion. Her gaze of steel has even made Yuu quail.
Beauty, Brains and Brawn: The fashionable and popular Arimi is the Beauty, the booksmart and calm Meiko is the Brains, and the sporty and emotional Miki is the Brawns
Big Brother Mentor: Kijima, as mentioned. His wife Rei becomes Miki's Big Sister Mentor as well.
Arguably, to Yuu Satoshi is both this and his best friend. At the end of the story arc that reveals Yuu's father to not be Satoshi's dad, he lampshades this by quipping "It would have been interesting to have you for a little brother," to which Yuu replies, "But I wouldn't have wanted you for a big brother."
In the anime, he's also this to Miki sometimes. Specially when she's depressed after Yuu announces he's going abroads: Satoshi takes her as his date for his highschool prom, lets her confide her woes on him, and then gently tells her that she's not the only one in pain. Miki understands Yuu's side of the story, and then Satoshi reveals that he sneaked Yuu and makes them dance outside.
Big Fancy House: Yuu and Miki's new house. And Meiko's, which is so big that Miki is all starstruck when she goes spend the night there. Also, Miwa and Suzu's houses: justified as their dads are very well-known architects and quite well-off, so they likely built their own homes.
Brother-Sister Incest: Yuu finds out that he and Miki are half-siblings and breaks up with her, but they eventually decide to get married anyway. Then Yuu finds out he was wrong about who his father was again and they're Not Blood Siblings after all.
Squared in the last episode when each new set of happily-married parents announces they're pregnant, adding half-siblings to the completely un-blood-related Miki and Yuu; worthy of note that these future half-siblings are not at all blood related to each other. And you thought polygamists had it bad.
Cleaning Up Romantic Loose Ends: If you go after either Yuu or Miki, it's highly likely you'll team up with someone else... and you guys will fall in love between yourselves.
Clingy Jealous Girl - Crazy Jealous Guy: Lots. There's Miki and Yuu around eachother, Suzu, Jenny, Arimi around Yuu. Kei, Ginta, and Michael around Miki. Satoshi around Meiko, etc.
Cool Big Sis: Doris from the American arc. She's not really happy about it, since it works against her in the romance field: men, and specially her crush, only see her as a friend and not as a prospect girlfriend. She has to prety much spell her intrest to Brian after Jinny and Bill get hitched.
Crossdresser: Just once, but it's memorable: Yuu has to crossdress for a TV commercial with idol Suzu Sakuma and he hates it. No one outside of Yuu and Suzu's social circle knows Yuu is "the tall girl"; Ginta even openly comments on how attractive "she" is in front of Yuu.
Dogged Nice Guy: Poor Satoshi. He's the most popular guy in the High School and he has to fall in love with the one girl that's not interested on him. He tries - persistently - to become the Replacement Love Interest for Meiko and, in fact, almost does. When it's clear Meiko is very much in love with Namura he more or less gives up quietly.
Dude, She's Like in a Coma: Subverted: Miki was pretending she was unconscious when this happened, hoping Yuu wouldn't tease her for a recent and embarrassing accident. It didn't work, obviously.
Education Mama: Both of Kei's parents. This drives him to stop playing the piano and run away from home.
Expository Hairstyle Change: Anju Kitahara used to have long hair as a pre-teen girl, but when we see her for the first time, she's already keeping it much shorter. Also, Meiko has straight hair, but she starts perming it after she starts going out with Namura
First Girl Wins: Subverted: Arimi and Anju actually are first girls who knew Yuu from before he met Miki, yet Miki is presented first in the series and she ends up winning.
Miki may be just a touch more Genre Savvy than she lets on; after she warms to the spouse-swapping, she is heard calling her parents' new spouses "Chiyako-mama" and "Youji-papa" in the subtitled version.
As unconventional as the Koishikawa/Matsuura marriages are, they seem to be the only one shown in-series to be happy. (The weddings of Namura and Meiko, and Yuu and Miki, in the series finale, notwithstanding.) Meiko's parents are shown to be unhappy and unfaithful (and for added drama, Mrs. Akizuki is a Lady Drunk), and Satoshi's father's chronic philandering seems to have put noticeable strain on his marriage (not to mention his relationship with his son).
Hikikomori: Yuu almost became one at age 12, spending a month locked in his room after finding out by accident that Youji might not be his biological dad..
Ill Girl: Anju, who has a weak heart and almost dies at one point.
Important Haircut: After their big misunderstanding over her love letter, Meiko jokely suggests that Miki invoke this right before it is revealed that Ginta cut his hair to apologize to Miki. After Yuu dumps her, so does Miki to try get over herself: her shoulder-length hair becomes a bob that same day.
It's Not You, It's Me: Invoked by Namura, when he leaves Meiko since he'll just stunt her life and by Yuu, when he dumps Miki believing they're half siblings. There's a major difference, though: the first straightforwardly says "this won't work so please move on and be happy", while the other Cannot Spit It Out.
Japanese School Club: Several, actually. Miki and Ginta are members of their school's tennis teams and so is Tsutomu, Meiko is in the literature club, Satoshi's friend Furutachi is in the broadcasting club, and Arimi is the star of her school's track team.
Jerk with a Heart of Gold: Arguably, the majority of the cast qualify for this (albeit with varying degrees of "jerk"). Notable exceptions include Jin, Rumi, Youji, Chiyako, Akira, Anju, Yayoi and Kijima (who omit the "jerk") and Meiko's parents, as well as Satoshi's dad (who omit the "heart of gold").
Just a Kid: Miki discards Michael because she sees him this way. Michael does NOT approve. In the manga, this is also how she treats Kei, scolding him for being immature and nagging him to go back to school.
She does that in the anime too, to the degree of slapping Kei when he goes too far.
Karma Houdini: Mr. Miwa, Satoshi's famous architect dad. Notorious for womanizing, he not only exhibits little shame about his chronic unfaithfulness, but has the gall to grouse about not being able to nail Yuu's mom.... while his own son is sitting in front of him. And the deal is borderline Played for Laughs in The Reveal moment itself, Face Fault and funny faces included.
Love Letter Lunacy: Part of the Back Story: Miki writes Ginta a love letter, and sticks it in a magazine in his bag. This magazine was actually borrowed from another boy, so the owner takes it out and reads the letter, humiliating Ginta, who vehemently denies any feelings for Miki, claiming she's one of the guys. Miki and Meiko, of course, came back to get something and heard every word...
Mistaken for Gay: Hilariously done with Satoshi and Yuu. Satoshi spends some episodes pretending to have the hots for Yuu, to cover up their investigations about their possible common past and Satoshi's own feelings for Meiko; it works so well that Miki sees Satoshi as another rival for Yuu's affection, and at the same time Meiko seems to ship them a bit.
Don't forget Bill, who spends most of the last third of the anime thought to be a Straight Gay, but ends the series dating Jinny. So yeah, he's somewhat of a Camp Straight instead..
New Old Flame: Miki and Yuu's parents, for each other. Miki's dad dated Yuu's mom, broke up with her, married Miki's mom and they had Miki, then divorced her in friendly terms and got back together with his old girlfriend. Exactly the same case with Yuu's dad and Miki's mom. (Except for Chiyako's miscarriage.).
For some real recursion, some fanfics, set pre-series, actually start with Jin and Rumi, and Youji and Chiyako, as couples before the "original" couples formed.
Only Six Faces: Several characters have pretty much the same features.
OOC Is Serious Business: Yuu is pretty much a chill guy: during most of the manga, the only emotions he displays are contempt, happiness and, sometimes, moderate anger. Because of this, when near the end of the anime he breaks up with Miki and she, very calmly and with a very, very sad voice, asks basically what has gone wrong and he explodes crying and yelling at her, it's a very powerful moment. Of course, he does this because he thinks he's found out he and Miki are half-siblings.
Also, Miwa - he's usually the more mature guy of the cast, and when's he's not the Voiceof Reason he's being the Plucky Comic Relief. But when his crush Meiko comes crying because Namura just left her he snaps, goes all the way to Hiroshima and gives him the beating of his life.
Shipper on Deck: Suzu, in the manga. She didn't want Yuu for herself there, but wanted to hook him with Meiko. Possibly a Shout-Out to Yoshizumi's earlier shipping plans.
By the end of the anime, literally the entire supporting cast ships Yuu and Miki.
Also, Miki and Yuu ship Namura/Meiko. Though their deal is quite more complicated: Yuu found out first and wasn't impressed but still became their Secret Keeper, but Miki found out only when their cover was blown to someone else and had an Heroic BSOD since it deeply shook Miki's faith in Meiko due to her not trusting Miki enough to tell her.
Tsutomu, once he stops being Arimi's Dogged Nice Guy, openly supports her and Ginta. In the anime, he goes as far as giving a What the Hell, Hero? speech to Miki when Gint and Arimi have a fall-out due to Ginta neglecting his girlfriend to support the very distraught Miki (to be fair, Miki does have pretty good reasons to be depressed, though Tsutomu doesn't know), so it's up to them and Yayoi to fix it.
Slap-Slap-Kiss: Yuu and Miki started like that. Suzu and Kei are once or twice hinted to possibly end up like this.
Spoiler Opening: The very first shot is of Yuu and Miki kissing. Gosh, I wonder who she's gonna choose?! That there is a scene later in the sequence of Miki standing between Yuu and Ginta, looking adorably confused, does not help.
That's because that one is the second opening, supposed to air when they are already together anyway. For some reason they decided to skip the first Japanese opening, perfectly spoiler free.
Arguably worse were the Spoiler Eyecatches. Every triangle on the show showed up in at least one, complete with the resolution, and they almost always showed up long before the actual resolution took place.
Stalker with a Crush: Kei's rather possessive of Miki, as she's one of his very few friends, and he does some serious work towards isolating her from Yuu. Anime only characters Michael and Jinny arguably qualify, as well as anime!Suzu. Satoshi is a more gentle version of this trope in regards to Meiko.
Stepford Smiler: Yuu. He's a pretty chill, apparently carefree guy, but deep down he's got issues. Picture a slightly older Hayama that has been brought up by a loving family (in fact, both even look quite a bit alike)
Watch the movie, and compare Yuu's treatment of Miki throughout the first third of the series with the fact that, before he ever met her, he spent an entire day following her around town. This makes Marmalade Boy an instance of a Stalker with a Crush being the male protagonist.
Sugar And Ice Guy: Yuu starts as this, hiding his feelings for Miki and his thoughts on the parental deal under his Deadpan Snarker facade. He aknowledges it as well when he confesses this to Miki, openly saying he liked how open she was on her disapprovement while he just couldn't spit it out.
Sure, Why Not?: Yoshizumi originally didn't intend for Ginta and Arimi to actually get together, but fan letters gave her the idea.
What Could Have Been: The original plan for the series, according to Yoshizumi herself, was to have Yuu and Miki find out they were really blood siblings, break up, and find love with other people. When she put this idea through to her editor the response was basically "You crazy, woman? The readers love Yuu and Miki as a couple!", and thus the two characters find out they were Not Blood Siblings.
There's more. An even earlier plan was to have each of four main characters (Miki, Yuu, Meiko, and Ginta) Gender Flipped, so it was originally going to be a boy with Miki's angst and drama experiences and a Genki Girl that eventually became Yuu. Yoshizumi changed it when the editors told her that male protagonists of shoujo manga tended to be weak and unlikable.