10 Anime Romances That Moved Way Too Fast To Be Realistic

Anime is known for telling captivating, imaginative stories where the usual rules of reality don’t apply. In romance anime, it’s common to see relationships develop incredibly quickly, jumping over the typical months or years of getting to know someone. You might see a proposal in the very first episode, or characters falling in love instantly after a dramatic event. These shows focus on a strong emotional connection happening right away, rather than a realistic progression. This list highlights anime series where the main couple goes from strangers to committed partners very fast. Often, the speed of the romance creates the drama and humor that fuels the entire story.

‘Tonikawa: Over the Moon for You’ (2020)

Okay, so this anime starts with a crazy fast romance! I mean, the guy, Nasa, almost gets hit by a car, and the girl who saves him? He immediately confesses, and she says yes… but only if they get married right then and there! It’s totally over the top, and honestly, that’s what grabbed me. The whole show is about these two newlyweds just figuring things out as they go, since they barely know each other. Forget dates and getting to know each other slowly – they jump straight into marriage and all the daily life that comes with it. It’s a really unique take on romance!

‘A Couple of Cuckoos’ (2022)

This anime is a funny and heartwarming story about Nagi and Erika, two high school students who find out they were accidentally swapped as babies. To keep both families connected, their parents come up with a plan: Nagi and Erika should marry each other! The catch? They’re told to get engaged and live together right away, even though they’ve just met. Produced by Shin-Ei Animation and SynergySP, the show throws these two into a surprisingly serious relationship from the very beginning.

‘Love After World Domination’ (2022)

This romantic anime centers around Fudo Aikawa, the leader of the heroic Gelato 5, and Desumi Magahara, the villainous Reaper Princess, who unexpectedly fall in love. The series quickly establishes their secret relationship, showing them dating even while fighting on opposite sides. They risk everything to steal moments together, going on clumsy, everyday dates while hiding their connection from their superhero team and the evil organization they belong to. Their immediate and forbidden romance is funny, though a bit unbelievable, as they clearly value their feelings for each other more than saving the world or taking it over.

‘Boarding School Juliet’ (2018)

This romantic comedy playfully borrows from the story of Romeo and Juliet, immediately creating a forbidden connection between the leaders of two rival school groups. Romio Inuzuka, from the Black Doggy House, and Juliet Persia, from the White Cats House, are public enemies who quickly fall for each other in secret. Romio confesses his feelings to Juliet in the very first episode, and she reciprocates, instantly changing their relationship from constant fighting to a hidden romance. The entire show relies on the high stakes and drama of their secret, yet official, relationship.

‘My Little Monster’ (2012)

Shizuku Mizutani is a dedicated student who prioritizes her studies. When she’s asked to deliver papers to Haru Yoshida, a known troublemaker, it sparks an unexpected connection. Haru, who struggles with social interaction and has a fiery temper, quickly becomes fixated on Shizuku. He immediately declares her his friend and, surprisingly, confesses his feelings for her. This anime series, produced by Brain’s Base, sets the stage for a complicated and emotionally charged relationship right from their first, somewhat chaotic encounter.

‘Say “I Love You.”‘ (2012)

Mei Tachibana has deliberately avoided close relationships for sixteen years after a painful experience, preferring to keep everyone at arm’s length. Surprisingly, Yamato Kurosawa, the most popular boy in school, becomes fascinated with her after she accidentally kicks him. Their connection quickly intensifies when Yamato kisses Mei on their first night together, initiating a relationship much faster than typically seen with characters who are so hesitant to open up. The anime skips the usual gradual process of earning the trust of a guarded heroine.

‘Darling in the Franxx’ (2018)

This anime is set in a future world destroyed by disaster, where children fight using enormous robots called mechas. Hiro, the main character, feels lost and inadequate after being unable to connect with a compatible co-pilot. Everything changes when he meets Zero Two, a powerful and notorious soldier known for quickly abandoning her partners. During a dangerous situation, she asks him to pilot her mecha, and they instantly form a deep, passionate connection through the heat of battle. This pivotal moment kicks off a complicated yet epic love story as they work together to save the world. The show is a collaboration between the studios Trigger and CloverWorks.

‘Golden Time’ (2013–2014)

The anime centers around Banri Tada, a college student who lost his memories before high school because of an accident. He quickly becomes the focus of Koko Kaga, a vibrant and determined girl who initially seems interested in someone else. Koko soon dedicates herself entirely to Banri, leading to a fast and intense relationship. This series, produced by J.C.Staff, explores a romance where Banri begins a serious relationship while still trying to figure out who he was before his accident.

‘Tada Never Falls in Love’ (2018)

Mitsuyoshi Tada is a shy high school student who loves photography but has never been in love. His life changes when he meets Teresa Wagner, a bright and energetic exchange student who gets lost soon after arriving in Japan. This original anime from Doga Kobo shows Tada and Teresa quickly becoming very close – Teresa even transfers to his school and joins his club the very next day! Their connection feels instant and powerful, completely shaking up Tada’s quiet, reserved personality.

‘The Pet Girl of Sakurasou’ (2012–2013)

Sorata Kanda is a typical high school student who lives in Sakura Dormitory, a residence known for housing the school’s most unusual and demanding students. When the incredibly gifted but utterly helpless Mashiro Shiina arrives, Sorata is unexpectedly made responsible for taking care of her. This close living arrangement, brought to life by J.C.Staff animation, quickly creates a strong connection between them, filled with both reliance and budding romance. However, their relationship develops very quickly, making the emotional connection feel somewhat rushed.

Out of these couples who quickly became involved, which one do you think had the strongest connection and best chemistry?

2025-11-24 21:15