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Anime and Manga
- Nogizaka Haruka no Himitsu: It eventually turns out that Yuuto was the one who got Haruka into anime and manga in the first place when, as a kid, he found her crying in a playground on his way home from a shopping-trip with an Otaku friend, and gave her a manga magazine. The incident didn't leave a huge impression on him, but it essentially changed her life - arguably for the better. (Though her Overprotective Dad might disagree...)
- In Ai Yori Aoshi there's a broken Childhood Marriage Promise but she wants to find him. When she does he doesn't remember her at first. There are flashbacks, not to the first time they met but while they were friends as kids together.
- Maken-ki!: Inaho introduces herself as being Takeru's fiancee, because of the promise he made to her when they were children. Which comes as a surprise to him since, he doesn't recall seeing her before enrolling at Tenbi Academy. It's finally comes back to him in chapter 59. Takeru had given himself a head injury to match the one Inaho's father had given her, which affected his short-term memory.
- Panzer World Galient: When Jordy and Asbeth arrive at White Valley, Jordy meets and befriends White Valley's leader's girl, Chururu. Shortly after Asbeth and Chururu's father explain to both they had already met when they were two-years-old, during an ealier visit of Jordy's "grandfather". Naturally, since Jordy and Chururu were toddlers back then, they had completely forgotten that.
- Barry doesn't remember that he and Dawn met when they were younger. Granted, they're probably only ten or eleven...
- Ash and Serena met in a summer camp held a few years before Ash started his journey. Ash remembers the event, but not Serena specifically (a bit justified since that was likely the only time they met).
- Pokémon Adventures: Ruby and Sapphire meeting each other as little kids led to Ruby to becoming more delicate and feminine, and Sapphire wilder and tomboyish. When they met in series they both couldn't stand the other's new persona, nor did they remember meeting each other before.
- In Venus to Mamoru!, it gradually becomes clear that the Beatrice-user who saved Mamoru during a disaster when he was small, was Ayako's uncle — and what's more, she was there too. Neither one of them remembers at first due to having been quite young and traumatized to boot, but that event was the reason why Mamoru decided to become a Beatrice-user himself, which led to him joining the Beatrice Academy, where he, of course, met Ayako again...
- Love Hina is probably the poster child for this trope. Keitaro knows about his childhood friend whom he promised to get into Tokyo University with... he just can't remember her name or face. It turns out he had two childhood friends: Naru and Mutsumi.
- Fruits Basket's Tohru met Yuki when they were younger, but it isn't until later on in the series he realises she was the same girl. He believes she doesn't remember but actually the memory was very important to her, even though she never learns that Yuki was the boy.
- In Maiden Rose, Klaus and Taki meet briefly in the middle of a forest by chance when they are young and make something of a Promise. Years later, they meet again and Klaus recalls but continually dismisses the memory, until their Relationship Upgrade, when he realizes from Taki's scent that it was him.
- In Tokyo Babylon, a child Subaru meets a teenager Seishirou as he cradles his kill, and they end up making a promise. Years later the teenaged Subaru only remembers this as a vague dream, and has little idea why Seishirou, now a young adult, has suddenly appeared in his life as a suitor. Unfortunately the memory isn't a very happy one, once it's revealed...
- In the Saint Beast drama CDs, Rey reveals to Shin that he had met Luca long before the day he actually introduced himself, and felt guilty for hiding it. In their adolescence Luca found Rey crying and lost in a forest and led him out. After searching out his rescuer, Rey was too embarrassed to introduce himself until many years later when he received wings and felt he had something to bond over. Shin remarks that Luca probably knew all along and was too gracious to say anything.
- In Junjou Romantica, Nowaki recalls the day he found out the orphanage owners weren't his real parents and tried running away. He stops at a park when his tires go flat, only to have his future lover walk by, inquire, and then start dishing out life lessons about the obstacles kids must get through before tattling to the patrolman. Years later Nowaki remembers the encounter and mentions it to Hiroki, but neither realizes it was each other.
- In the original OAV animated version of Ah! My Goddess, Keiichi and Belldandy met when they were children. After Belldandy made a promise with him, it was considered as she made a contract when she didn't have her qualification yet. She had to erase Keiichi's memories of her and promised to return to him once she gained her qualification.
- Futari Wa Pretty Cure Splash Star: Both Cures met briefly five years prior to the events of the series and forgot.
- Kenichi: The Mightiest Disciple: When Kenichi was a kid, he and Ryuto met Miu. After seeing Miu defeat the thug trying to assault a kind old lady, both Ryuto and Kenichi vowed to become strong, but Kenichi forgot the fact. Miu apparently recognized him right away, but didn't feel the need to bring it up when they meet again.
- In Axis Powers Hetalia, Germany is hinted to be Holy Roman Empire, Italy's Love Interest when they were little. It's not clear whether Italy believes them to be the same person or not, but Germany, at least, appears to have forgotten about their shared childhood. He might have remembered in the Valentine's Day strip, but that plotline has been abandoned for years now.
- The first Sailor Moon movie explained how Usagi and Mamoru first met. A 10-year-old Mamoru was in the hospital after being in a car crash that his parents died in. Fiore is an alien disguised as a human who was ill because he couldn't survive on Earth at the time (though he adapts). 4-year-old Usagi is there to visit her mother who has just given birth to her younger brother Shingo, and she sneaks into Mamoru's room. Usagi and Mamoru talk for a bit, then Usagi gives Mamoru one of the roses she had originally brought to give to Ikuko-mama. Mamoru then gives that same rose to Fiore as he leaves Earth.
- In Skip Beat!, Ren and Kyouko actually met when they were young children, not when they were first introduce at the agency. Ren is actually Kyouko's long-lost childhood friend 'Corn,' which just makes it even more ironic that she starts the series off hating him. Ren knows, but Kyouko is still in the dark about their pasts.
- In Popcorn Avatar, Kurando has met Lisa before, way back when he was still in 3rd grade, when she was crying in the park after being bullied for her beautiful blonde hair. He remembers this again after a short bout of memory regression however.
- In Revolutionary Girl Utena, it's revealed near the end that Utena had met Anthy before when she was just a kid, and that her desire to save her from the million swords of hate is the true reason why she desired to become a prince.
- In Kara no Kyoukai, Mikiya Kokutou first met Shiki Ryougi as he was walking home in the snow and paused to talk to her, but when they met later once they started at the same high school she didn't recognize him. At the very end of the series we find out why, since Kokutou was actually talking to Shiki's third personality, who was unknown even to her at that point in time.
- Played for painful drama with Kouichi Sakakibara and Izumi Akazawa in Another. Though they only met a few years prior to the story, the forgetfulness is justified since Kouichi was only in Yomiyama for the funeral of his aunt, a time erased from everyone's memories due to the events of the curse. Akazawa remembers seconds before her death, and right before dying she aks Kouichi if he remembers too. He doesn't and tells her so, and Akazawa calls him out on it.
- In Nine Rules to Break When Romancing a Rake, the couple met when she was barely out of her teens, he was older; he was kind to her, she was smitten. Many years later, she decides to pursue him. When she's won him, she tells of their early encounter — he doesn't remember it at all, and laments that if he'd only recognized her true worth at that time, they wouldn't have wasted so many years apart.
- Subverted in Saki. Hisa played against Mihoko once in middle school, and Mihoko was so surprised that she opened her right eye in surprise. As the game ended, Hisa told Mihoko that she found her right eye pretty. Hisa never showed up for the tournament the following day, went to a different high school from Mihoko, and when they faced each other again, Hisa was unable to recognize Mihoko. However, during the individuals, when Mihoko faces Hisa again and opens her Magical Eye, Hisa remembers the meeting, and afterward, the two become quite close.
- In Nisekoi, Raku met every single girl in his Unwanted Harem when he was a kid, but it takes a while for him to even find out about it. At first, most of them don't know about it either. The problem is that there are three girls who remember having made a Childhood Marriage Promise with him, but he only remembers to have made the promise to just one girl.
- In Part 4 of Jojos Bizarre Adventure, it turns out that Reimi, the ghost girl who kicks off the hunt for Serial Killer Kira, once babysat for Rohan, and ended up throwing him out of the window of her house to save him from Kira the night she was murdered. The event was so traumatic that he eventually used his stand to erase the memory from his mind.
- Nozaki's first meeting with Sakura in Monthly Girls' Nozaki-kun actually inspired Mamiko's physical appearance (and made Sakura fall for him), but he doesn't remember this because he was so exhausted that day that his memories of it are fuzzy.
- In Detective Conan, Shiratori and Kobayashi met by chance when they were children and didn't even learn each other's names. The first remembers their meeting so clearly that he fell in Love at First Sight with her, dubbed her as the "girl of his destiny", decided to become a policeman instead of a lawyer to honor her, and had a part in the Love Triangle with Takagi and Sato because he mistakenly thought Sato was the girl; the latter, however, completely forgets that day until she hears Shiratori tell a culprit exactly the same "The Reason You Suck" Speech that his kid self gave to some shoplifters to defend her in their meeting.
- In episode 2 of The Testament of Sister New Devil, the first thing Yuki does when introduced to Basara after he transfers to her and Mio's school is to give him The Glomp. In front of the entire class and Mio. She then reminds him of who she was, and he then vaguely remembers her. Mio then tries to force the two apart, and Basara is instantly hated by all the guys at the school because the two girls are considered to be untouchable idols, and yet both of them seemed to be fighting over him.
- In Deadman Wonderland, Ganta meets Shiro in prison; she instantly starts acting like his friend and claims they've met before, but he has no idea what she's talking about. It takes a while for him to remember that they were actually friends when they were about four, prior to Tokyo's near-complete destruction.
- Haru and Akane from Ojojojo were actually in the same class in middle school for a week, but they never talked to each other. When this happens again in high school, Akane becomes Haru's friend as a chance to make up for her mistake of never reaching out to Haru. The guilt of not telling her that they already met slowly eats away at her.
- A side story in My Love Story!! features a five year old Takeo chasing a beetle into a cave and meeting a child there. Since he'd been told scary stories about the cave, he assumes the other child is a ghost of a little boy and that, by leading him out, he's helping the ghost move on. Later, we see the child, actually a little girl with very short hair, with her parents and get The Reveal that she was Rinko Yamato, Takeo's present-day girlfriend.
- The Vanishing of Nagato Yuki-chan, which is set in an Alternate Universe of the Suzumiya Haruhi series, changes Haruhi's first meeting with Kyon into this. Rather than Kyon Time Traveling to help Haruhi write a message to aliens, she instead just meets the younger version of him. It doesn't change the fact that he still introduces himself as John Smith though...
- I Can't Understand What My Husband is Saying: After hearing the story about how Nozomu and Rino met, Hajime realizes that he worked at the sushi bar that they frequented.
- Chizuru from Kimi to Boku played at the park with Yuki once when they were younger. When they meet again at age seventeen Yuki doesn't remember Chizuru and believes him to be delusional. It turns out Chizuru was really friends with Yuuta, Yuki's identical twin brother. Yuuta doesn't remember Chizuru either. Subverted with Yuuki, as he does actually remember Chizuru because he once gave him a toy thinking he was Yuuki.
- This occured to Naruto and Hinata in Naruto. Hinata was being bullied by boys because of her Byakugan eyes and Naruto tried to save her. He ended up getting beat up instead. The two don't interact much until they become ninja. Naruto later recalls it in The Last: Naruto the Movie and Hinata always remembered it.
- Medaka Box has a slight twist on this. Zenkichi does remember that he and Medaka first met when they were two years old; he suggested that she was put on this Earth to make people happy, which in the present he blames for the Chronic Hero Syndrome that's left her profoundly messed up and unable to connect to other people normally. The part he doesn't remember, however, is that Medaka proposed to him, which he brushed off because, again, two years old. Medaka remembers the rejection and thinks it still stands, making her believe that her feelings for Zenkichi are one-sided. Since Zenkichi isn't aware of this, he just assumes that Medaka doesn't see him as anything but a friend. After he corrects the first problem by convincing her to find her own purpose in life, the second problem is corrected by her giving him a Big Damn Kiss in front of the entire student body.
- Exa and Sheila of Superior met once when they were younger. Unfortunately for their budding romance, this was right after Sheila had slaughtered Exa's home village (neither of them saw the other's face due to the smoke from the burning buildings). This event is what made Exa swear that he would kill the demon king despite otherwise adhering to a strict Thou Shalt Not Kill policy.
- In The Phantom the hero and his love interest meet for the first time in the first story arc, until Lee Falk wrote the story of "The Childhood of the Phantom" and included a scene where they met briefly years before when they were both children.
- When Mary Jane Watson revealed to Peter Parker that she knew he is Spider-Man, she also told him quite a bit of her life story, including that she had seen him raking leaves through the window of her aunt's house (May Parker and Anna Watson were neighbors) and thought he was cute even before he became Spider-Man.
- A few Superman stories over the decades depict Clark Kent and Lois Lane meeting as young teens, sometimes with Clark becoming Superboy. A few stories also have young Clark meet young Bruce Wayne.
- The Child of Love: In the sequel Rei met Takuma when she was a child. Takuma did not forget her, but Gendo wiped his existence from Rei’s memory.
- Once More with Feeling: In chapter 9 a technician told Shinji that Asuka and he had already met when they were toddlers (something both of them had utterly forgotten about). Kyoko was visiting the Japanese Branch, and she and Yui left their kids in a play pen, and they... well, they fought. Shinji got a good laugh of it (thinking that some things never change), and so Asuka did when he told her.
- The Kirita Chronicles: Kirita and Akio meet on two occasions prior to the beginning of the Death Game, but only Akio remembers these meetings because they had more of an impact on him. Akio eventually tells Kirita about this during Chapter Nine, and she eventually remembers their previous meetings.
- Seinen Kakumei Utena: Utena actually met both Touga and Saionji two years before the night of her parents’ funeral, back then she was a spoiled rotten little girly girl, and the boys victims of horrifying abuses. Unbeknown to her, she subsequently got herself periodically stalked by a jealous and obsessed Touga for years afterwards.
Film - Animated
- In The Princess and the Frog, Tiana and Naveen meet minutes after he arrives in New Orleans. He tries to woo her, but she ignores him and he moves on, even saying "Eh..". He fails to recognize her when they meet again at the party, though.
- In Spirited Away, Mysterious Protector Haku knew Chihiro's name even though he couldn't remember his. Chihiro kept having a feeling that she met Haku from before but couldn't remember when. It was only when they were flying through the air together that Chihiro remembered she fell into a river as a little girl, only to be saved by the spirit residing there. Chihiro recalling this memory to Haku caused him to remember his identity.
- In Anastasia, Dimitri used to work as a servant in the Winter Palace when he was a boy, and he was the one who saved an eight-year-old Anastasia/Anya from being captured in the Revolution. Anastasia remembers that she was saved by "a boy who worked at the palace" despite her Trauma-Induced Amnesia, but doesn't know it's Dimitri; for his part, Dimitri had completely forgotten until Anastasia tells Sophie her backstory.
- Entirely justified in Sleeping Beauty: Aurora was a newborn baby while Philip was no older than 5, and this isn't a story that includes No Infantile Amnesia.
- In Frozen, what draws Kristoff to the rock trolls' place is when he sees a horse leaving a trail of ice due to eight year old Elsa freaking out over freezing Anna's head. This is Kristoff's actual first encounter with Anna. 13 years later, Kristoff runs into Anna at Wandering Oaken's Trading Post & Sauna and doesn't recognize her. That earlier encounter is never brought up, not even when Kristoff brings Anna back to Grand Pabbie to analyze her frozen heart.
Film - Live Action
- Brian Allen and Christina Roberts in Blow Dry. They knew each other as very young children because their fathers were business partners. But then the partnership broke up, Christina's parents divorced (and she went to live with her mother in Michigan), Brian's parents divorced and he moved in with his dad in York, and the two lost touch with each other for twenty years. Cue the events of the film...
- The prologue to the movie Adam and Steve features the two main characters hooking up in the 80s and having spectacularly bad drugged-out sex. They meet, sober and professional, 20 years later and don't realize it's the same guys till almost the end of the film.
- This happened in the new A Nightmare on Elm Street (2010) remake to the protagonist.
- Two of these occurred in A New Hope due to new information revealed in the prequel movies. First of all, C3PO didn't know who Obi-Wan Kenobi was, but R2D2 did, and he didn't remember them, although he clearly knew them both when he was younger, making his interactions with them in the prequels somewhat confusing. This was partially explained at the end of Revenge of the Sith, where Captain Antilles orders C3PO's memory wiped, which erases his memories of the entire prequel trilogy. In Obi-Wan's case, it's possible he did recognize them and just didn't say anything. This would be consistent with his characterization in the first trilogy because he's an old Jedi master familiar with the mysterious ways of the Force, and he was trying to shield Luke from the dark secret about his father.
- Also, Luke's aunt and uncle didn't seem to remember C3PO either, although he had worked for their family for years in the time between The Phantom Menace and The Clone Wars. Owen may not have been telling Luke the truth about that, however, much like he was lying to Luke about the fate of his father in order to keep him sheltered. (The hologram of Leia probably made him decide against mentioning that he knew where the droids had come from.) Of course, it's just as likely that they simply didn't recognize C3PO; it had been over 20 years and the Protocol droid didn't have his iconic gold finish when he left their service.
- Subverted in Super Powereds, it seemed for a long time that Vince had forgotten his meeting with Camille (who had had her hair dyed at the time, went by a nickname, and told him about a part of her power that she hid later), but he figured it out before she revealed who she was. Played Straight with Nick's two years spent with Alice, before his memory was erased.
- In King Kelson's Bride, Kelson is reminded (by Rothana) that he had not only met his cousin Araxie when they were children, he also played with her and they got along very well with each other. Though their marriage is arranged, Kelson and Araxie decide to use those happy memories to build upon when forging their relationship.
Live Action Television
- In Fringe Peter met Olivia as a kid, but seems to have amnesia about this ever happening even though he is Olivia's boyfriend now.
- They both forgot this meeting as a result of repressing traumatic memories from around this time: for Peter, being kidnapped by his parents from an alternate universe; for Olivia, being the subject of Mad Science experiments.
- In Community Jeff and Shirley realize that when they were children Shirley humiliated him in a game of foosball. Jeff moved away soon after and they did not meet again until they were adults. The humiliation turned Jeff into the Jerk with a Heart of Gold he is today and Shirley's Heel Realization made her a very passive person.
- The Odd Couple: In one of the several versions of how Felix & Oscar first met, it was when Oscar's father ran a speakeasy in 1920s Chicago and Felix's father was an optometrist who fitted Oscar's father with glasses.
- My Name Is Earl: Randy goes to meet his childhood crush "Pinky," who it turns out was Earl's ex-wife Joy.
- Also, Joy originally tricked Earl into marrying her, given that her parents kicked her out for being pregnant out of wedlock. At the end of the series, it's revealed that the baby's father, whom she had a one-night stand with at a Halloween party, was Earl. Both were in costume.
- In one episode Drake & Josh discover that they met when they were nine (rather than in high school as they previously thought).
- In Il Ji-Mae, one of his love interests figures out who he was by a piece of jewelry the boy who saved her life carried. The other love interest also figures out who he was because he continued a story he never finished when they were children.
- Dharma and Greg begins with the two as children, walking with their mothers at the subway and seeing each other for the first time. Flash forward twenty years later and they pass each other again; Dharma concludes that she knows him from a past life and winds up following him to his office.
- An episode of Mad About You reveals that Paul and Jamie first met as kids at the Natural History Museum.
- In Friends Ross finds out that Phoebe robbed him when they were kids.
- Flashbacks also reveal that Rachel meets Chandler no less than three times: first as Ross's dorky roomate at Thanksgiving, then the next year as the guy Monica hated and then as Monica's friend in the bar. She remembers nothing when they meet in the Pilot though this is attributed to her teenage It's All About Me attitude.
- The Vampire Diaries: Damon & Elena actually met the night of her parents death and not in the scene we see in 1.02.
- In the Alien Nation novel Day of Descent, a flashback story about the spaceship crash five years before the series, Matt and George had a brief meeting in the climax of the book. But they didn't speak, and neither of them was able to tell members of the other species apart at that point, so they remain unaware that they've met before.
- Doctor Who:
- Rose actually met the Tenth Doctor for the first time as he was about to regenerate, months before she would meet Nine. Since he stayed in the shadows and they only spoke briefly, she doesn't recognize his face when Nine regenerates into Ten.
- A one-sided example in the 50th anniversary special The Day of the Doctor, the War Doctor meets the Moment who has taken the form of Rose Tyler (due to the Doctor and Rose's future closeness). Because the time-streams are out of sync and she only appeared to his incarnation, the Doctor forgets the meeting forever. However, it is implied that the meeting subconsciously resonates with him, causing his relationship with Rose to be as close as it was in the first place.
- The episode "The Name of the Doctor" has Clara enter the Doctor's timestream and appear throughout his life, although, most of the time, she appears just as he's leaving or running somewhere, so he doesn't see her. However, she is present when the First Doctor first steals the TARDIS. In fact, she advises the Doctor to take a different TARDIS than the one he intended, which is in a slightly better shape (all the TARDISes in that bay are awaiting repair). It's unclear how the Doctor would have fared with a less functional TARDIS, but it may be the completion of a Stable Time Loop.
- Then, of course, the Doctor twice comes across a younger Clara when he finally notices these echoes and starts investigating them. Once again, Clara does not seem to recognize him as the weird man she chatted with on the playground.
- Two examples from "Listen":
- Clara and the Doctor meet the young Danny Pink but the Doctor wipes his memory of the incident and puts him to sleep, dreaming of being a brave soldier. Due to poor communication skills on Clara's part, the Doctor creates another Stable Time Loop in doing this.
- In an attempt to save the TARDIS while the Doctor is out cold, Clara plugs herself into the TARDIS' interface and it carries her to the Doctor's childhood. She was the "monster under his bed". It is left open to the audience's imagination whether or not the Doctor realises it was her.
- In the American Dear John, Ralph has a bad day and needs cheering up. John and Kate get him to remember something happy from his youth. He recalls a camper he used to have and enjoyed very much, but his happiness disappears when he remembers that a bunch of drunks stole it and rolled it into a gully. At the end of the episode, Kirk comes by and talks about his past. He mentions the time he and his friends got drunk and happened upon a camper.
- In Cougar Town, whilst Jules is lamenting that she doesn't have a Meet Cute with Grayson, it is shown that they had a Forgotten First Meeting (although it remains forgotten) and Meet Cute when Jules was new in town and Grayson introduced her to red wine.
- In 30 Rock, Jenna learns Jayden, a comedian she grew to hate during their actual first meeting, will join her show, so she decides to invoke this trope by saying "the four most vicious words you can say to a person you've already met. 'Nice to meet you.'" Unfortunately for her, Jayden genuinely doesn't remember her and cheerfully greets her with those words first. Subverted: he remembers everything and is just as petty as she.
Tracy: Hey, Dotcom, nice to meet you. (leaves)Dotcom: (to Grizz) Why would he say that to me?
- In Gilbert and Sullivan's Patience, Patience and Archibald were best friends when they were children; they are adults and meet again. Romance Ensues.
- Used as a plot device in Anastasia. Dmitry encountered the young Anastasia when they were ten and eight, respectively, He has never forgotten it (in exceptional detail, no less). At first, neither does Anya, but then she does suddenly remember a specific detail: Dmitry bowing to her, thus proving her true identity.
- BioShock Infinite begins with the player character, Booker DeWitt in a rowboat with a man and a woman. They're wearing rain coats, which prevents them being properly seen, but their quirky dialogue and voice actors do not change when we meet them a second time; they're the Lutece twins, two important recurring characters, and neither Booker nor the player (usually) realised who they were till the end.
- The second BlazBlue reveals that as a student Ragna met Taokaka while she was still a kitten (although he might remember, she doesn't). In this case their relationship is strictly platonic, however.
- Done via retcon in Final Fantasy IV: The After Years. Palom and Leonora actually met during the ending sequence of the previous game. Leonora remembered, but Palom didn't.
- A sequence in Final Fantasy VIII shows that either all or virtually all of the party members spent time in the same orphanage as children, and most of them don't remembered it - much less the fact that the person running said orphanage was Sorceress Edea, whose husband is Cid, headmaster of their mercenary training school. Irvine is the only one who remembers it all, due to not having used Guardian Forces until he joins the party - as it turns out, they can cause memory-loss with sustained use.
- Persona 2: Innocent Sin groups together Tatsuya, Maya, Lisa and Eikichi. They were all childhood friends of a group called the Masked Circle that disbanded when the group belived that Maya was killed in a fire. The last memeber of the group is a Forgotten Friend, New Foe. Note that all the Love Interests for Tatsuya are from this group.
- In Fire Emblem Tellius, Ike and Soren had met years ago, and Ike did not remember the first time that he met Soren, although Soren remembered in vivid detail. It was not until near the end of Path of Radiance that Soren bothered to remind Ike how they met, and it wasn't until Radiant Dawn that Ike finally remembered it first-hand. Justified in that their first meeting was right before Ike saw Greil killing Elena, for which Sephiran gave him amnesia which wasn't cured until being in the tower, where Ike and Sephiran's memories come to the fore.
- In Fire Emblem Fates, this turns out to be the basis of the supports between Azura and Arthur. This is because a teen Arthur saved a little Azura from being punished by Taking the Heat for her, but this happened before she was kidnapped into the Hoshido court; she remembers that someone helped her back then, but up until Arthur confronts her, she cannot remember who did it.
- Played with in Mass Effect. In the first game, you can encounter and destroy a rogue VI on Luna that has apparently gained sentience. In Mass Effect 3, you find out the VI was actually in fact EDI, the Normandy SR2's on-board AI and your eventual squadmate, in the early stages of her development. She remembered Shepard, but didn't want to say anything in case it made things difficult between them. Thankfully, she doesn't hold a grudge about it.
- Professor Layton and the Last Specter: The day that The Professor saved Emmy from going to jail caused enough of an impact on her that she trained to become his apprentice years later, but for the Professor, it was Tuesday. Apparently, she doesn't mind if he doesn't remember, she just happy to be going on an adventure with him.
- Deconstructed in To the Moon: The beta blockers Johnny takes after Joey dies leads him to suppress a large part of his childhood memories, causing him to forget why he wants to go to the moon and the first time he met River, this causes a great deal of resentment in River towards Johnny. As a result she futilely spent most of her life desperately trying to make him remember.
- In Third Super Robot Wars Z: Jigoku-hen, Heero relates that back before he was a proper assassin, he had a mission here to guard the Tiger of Helmajistan. Who was evidently the charismatic leader of a guerilla force some ten years ago. His name was Majid, the Tiger of Badakhshan. Setsuna's familiar with him too, since he was sent here once before to assassinate him. Prince Ali apparently didn't like the guy, and sent Setsuna and some other kids to assassinate him. Sousuke chimes him that he also was here to get rid of him. Hibiki Kamishiro is shocked at the odds that three separate child soldiers might end up in the same region as enemies.
- Harvest Moon: Back to Nature and Friends of Mineral Town have the protagonist meeting a girl as a kid, who turns out to be whoever you marries in-game via The Reveal.
- Played with in Kingdom Hearts: Chain of Memories. Naminé is forced to gradually replace Sora's memories of Kairi with fake ones of herself, which makes him think that Naminé was an old friend he had forgotten about, when the truth is that they never met until the events of the game. Then again, Naminé is Kairi's nobody, so in a way she did know Sora from childhood, if only by proxy.
- This trope plays a large role in the 18+ Otome Game Under The Moon, in which it is paired with Laser-Guided Amnesia and Played for Drama. Prior to the game, possible love interests Leni and Seizh were exiled for competing over the affections of the heroine Ashe, but she has forgotten them (through no fault of her own). Unsurprisingly, the guys are bitter about it.
- In Kanon, it turns out Yuuichi knows all of the main girls except Shiori from childhood. He forgot about all of this because that was also the time when Ayu had her terrible accident, and he was so emotionally broken by it that he ended up with Trauma-Induced Amnesia.
- In CLANNAD, Kotomi and Tomoya met years ago when they were just children. She remembers, as Tomoya was her Only Friend, but he doesn't until right at the very end.
- In Tsukihime, due to some Laser-Guided Amnesia, Shiki forgets about Kohaku and Hisui, and in the routes he does remember them, he cannot recall their names and also gets them confused due to the Twin Switch they accidentally pulled. Kohaku is not pleased, because she misunderstands and believes that Shiki thinks Hisui gave him her ribbon. Naturally, this means plan 'everyone has to die' commences as usual.
- A plot point of the eroge Snow Sakura, the protagonist Yuuji once meets a girl under a cherry blossom tree. Since he's forced to move to the place of childhood, he determines to find out who the girl is. There are two possibilities for the girl's identity: one is Misaki, his class mate, and another is Saki, his cousin.
- Too Much Information: The latest addition to Ace's Unwanted Harem is a very tall Ainu girl who ran away from home because she was always being mocked for her size, determined to find the only boy who'd ever called her pretty - a young Gaijin boy she'd found lost back in Hokkaido, and helped to find a police-box. Cue the revelation that Ace had gotten lost during a trip to Hokkaido with his mom when he was a kid, and had been helped by a pretty redhead...
- Kevin & Kell does this with Rudy and Fiona, who find out after dating for some time that they were in the same preschool - and hated each other.
- The Simpsons: In "The Way We Weren't" Marge & Homer met when they were circa 10 years old at summer camp and shared their first kisses together. When they met again in high school neither recognized the other (in part because one had very different hair and the other had an eye-patch when they first met).
- An episode of the 2003 Teenage Mutant Ninja Turtles revealed that the turtles had met Casey Jones when they were all kids, trying to teach him how to be strong. The turtles had disguised themselves, taking turns as to who would help him out, and Casey was using a different name (Arnold), so they never realized they'd met before.