S01E0125:431. Beginning with a Summer DayChildhood buddies Hayato and Haruki are reunited when Hayato moves to Tokyo and sees Haruki at his new school.Episodes — Season 1
Season pageS01E0125:431. Beginning with a Summer DayChildhood buddies Hayato and Haruki are reunited when Hayato moves to Tokyo and sees Haruki at his new school.
S01E0224:332. I Really Suck at Girl TalkAs the two old friends continue to get reacquainted, Haruki starts teasing Hayato for not owning a cell phone.
S01E0324:193. Produced by HimekoHimeko meets Haruki for the first time in years and decides to take her shopping to help update her wardrobe.
S01E0424:524. Small Hands, Broad ShouldersHayato and Haruki go phone shopping together and then Haruki ends up spending the night at Hayato's apartment.
S01E0524:505. Discipline, Young MaidenHimeko and Haruki decide to go on a diet, so Hayato starts asking friends for health-conscious recipe ideas.
S01E0625:326. What About Your Camouflage!?Hayato steps in when he sees Kazuki trying to make a move on Haruki, who keeps dropping her nice girl facade.
S01E0724:307. You're SpecialHayato visits his mother in the hospital and then makes plans with Haruki and Himeko to go somewhere together.
S01E0824:398. Where the Heart IsHayato, Haruki, and Himeko go to the movies as planned but end up catching an unexpected guest along the way.
S01E0924:579. Truly SpecialHaruki opens up about family issues after her rough night and Kazuki keeps trying to stir up drama at school.
S01E1024:3410. We Are Friends, Right?Himeko sets up a group chat with Saki from Tsukinose and Hayato and his pals make plans for a day at the pool.
S01E1124:5211. As Long As We're TogetherHayato and Haruki adjust to their new job and the girls shop for new swimsuits to wear on their big pool date.
S01E1224:1012. A Fresh StartHayato and friends enjoy their long-awaited pool day and then take a trip to revisit their roots in Tsukinose.Where to stream Oh Boy, Was I Wrong About Her
Subscription
Availability provided by JustWatch via TMDB, details on TMDB. Offers in the United States, subject to change.
Oh Boy, Was I Wrong About Her synopsis
Seven years after making a childhood promise to always be friends, Hayato is reunited with his formerly tomboyish pal Haruki at a city high school–only now, Haruki has transformed into the girl every guy dreams about! While Haruki’s looks may have changed, with Hayato, she’s still the same pal he remembers. Despite years apart, their promise and feelings remain and deepen into something stronger.
Oh Boy, Was I Wrong About Her cast
About the series Oh Boy, Was I Wrong About Her
Oh Boy, Was I Wrong About Her is a series (animation and comedy), airing on TOKYO MX since 2026. It has 1 season and 12 episodes. The series ended on September 21, 2026. Cast members include Ikumi Hasegawa, Shunichi Toki and Miharu Hanai. It is rated 6.8/10 by 13 TMDB users.
Frequently asked questions about Oh Boy, Was I Wrong About Her
Where to watch Oh Boy, Was I Wrong About Her online?
In the United States, Oh Boy, Was I Wrong About Her is available with a subscription on Crunchyroll and Crunchyroll Amazon Channel (source: JustWatch via TMDB, offers subject to change). Each episode has its own page with this information.
How many seasons of Oh Boy, Was I Wrong About Her are there?
Oh Boy, Was I Wrong About Her has 1 season for a total of 12 episodes.
Has Oh Boy, Was I Wrong About Her ended?
Yes, the series has ended: the last episode aired on September 21, 2026.
Who stars in Oh Boy, Was I Wrong About Her?
The lead actors are Ikumi Hasegawa (Haruki Nikaido (voice)), Shunichi Toki (Hayato Kirishima (voice)), Miharu Hanai (Himeko Kirishima (voice)), Natsumi Haruse (Minamo Mitake (voice)), Fuka Izumi (Saki Murao (voice)).
