Oh Boy, Was I Wrong About Her cover art

Oh Boy, Was I Wrong About Her

Tenkousaki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken転校先の清楚可憐な美少女が、昔男子と思って一緒に遊んだ幼馴染だった件Tenkosaki: The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a BoyTenbin

2026 · TV · 12 eps Finished

AniList average score
68%
On AniList users' lists
43,977

What is Oh Boy, Was I Wrong About Her about?

Oh Boy, Was I Wrong About Her is a TV anime series of 12 episodes animated by project No.9, adapted from a light novel. It aired from July 6, 2026 to September 21, 2026. AniList classifies it as comedy and romance.

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.

Synopsis from AniList, which credits Crunchyroll. The summary above it is written by FreeAnime.xyz from AniList's data.

Themes AniList users associate with it: Female Protagonist, Male Protagonist, Heterosexual, Female Harem, Tomboy, School.

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Streaming rights differ by country and change over time. A listed title page means AniList records it for this entry; it does not confirm the title is available in your region today.

Other official links listed on AniList

Official trailer on YouTube

Main characters

Characters AniList lists in a main role, with spoiler-free notes.

  • Hayato Kirishima 霧島隼人

    Main character

    Transferred from the rural Tsukinose to a city school. Skilled at cooking, he makes dinner for himself and his younger sister every day.

    Japanese voice: Shunichi Toki

  • Haruki Nikaido 二階堂春希

    Main character

    Hayato's childhood friend who lived in tsukinose until seven years ago.

    Japanese voice: Ikumi Hasegawa

Supporting characters

  • Minamo Mitake 三岳みなも

    Supporting character

    A girl from the gardening club. quiet but has a small-animal-like charm, loved by people of all ages and genders.

    Japanese voice: Natsumi Haruse

  • Saki Murao 村尾沙紀

    Supporting character

    The only daughter of the Tsukinose shrine, a mysterious and beautiful girl. She likes Hayato but struggles with overly formal email messages due to being too conscious of him.

    Japanese voice: Fuuka Izumi

  • Himeko Kirishima 霧島姫子

    Supporting character

    AniList has no description for this character yet.

    Japanese voice: Miharu Hanai

Related works

Prequels, sequels, side stories and source material, as linked on AniList.

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