Oh Boy, Was I Wrong About Her
Tenkousaki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken / Tenkosaki: The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy / TenbinSummary
I met my childhood friend again, and she had become a beautiful and innocent girl.
"It's been a while, Hayato."
"Haruki, is it?"
In the past, I used to play in the mud with my childhood friend in the countryside, and when I saw him again, there was no trace of the bratty young man I thought he was back then. Only in front of Hayato, she threw away the coat she was wearing and reacted in the same crass way she did back then. The distance between you and me has not changed.
(Source: Shousetsuka ni Narou, translated)
Where to watch
Platforms
Official and social
Availability may vary by country.
Episodes
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Details
- Format
- TV series
- Number of Episodes
- 12
- Episode length
- 24 min
- Estimated total length
- ≈ 4 h 48 min (12 × 24 min)
- Season
- Summer 2026
- Start date
- July 6, 2026
- End date
- September 21, 2026
- Status
- Finished
- Source
- Light novel
- Country of origin
- Japan
- Studios
- project No.9
- Romaji title
- Tenkousaki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken
- English title
- Oh Boy, Was I Wrong About Her
- Native title
- 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
- Other titles
- Tenkosaki: The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy · Tenbin
Characters 5
Main characters
- Hayato Kirishima霧島隼人Main
- Haruki Nikaido二階堂春希Main
Show the other characters (3)
- Himeko Kirishima霧島姫子Supporting
Profile
- Gender
- Female
- Minamo Mitake三岳みなもSupporting
Profile
- Gender
- Female
A girl from the gardening club. quiet but has a small-animal-like charm, loved by people of all ages and genders.
- Saki Murao村尾沙紀Supporting
Profile
- Gender
- Female
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.
Staff and studios
Studios
Key staff
- Chuanfeng XuDirector
- Yu HibariOriginal Story
- Hitomi MienoSeries composition
- N Nei KurahashiCharacter design
- Yuri MoritaMusic
- Naoki TaniMusic
- Ryousuke NakanishiMusic
- Daiki YamakiSound director
Show the full staff (3)
- SisoeOriginal Illustration
- DIALOGUE+Theme Song Performance (OP)
- harmoeTheme Song Performance (ED)