Tenkousaki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken

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.

(Source: Crunchyroll)

Rankings

#72 highest rated of 2026
#75 most popular of 2026
#24 highest rated of SUMMER 2026
#23 most popular of SUMMER 2026

Data

Format
TV
Episodes
12
Episode Duration
24 minutes
Status
RELEASING
Start Date
Thu Aug 06 2026
Season
SUMMER 2026
Average Score
70%
Mean Score
72%
Popularity
25788
Favourites
271
Studios
project No.9
Producers
Asmik Ace
Pony Canyon
TOKYO MX
Movic
Toei
BS Fuji
Bit grooove promotion
KLOCKWORX
Sun Television
Source
LIGHT_NOVEL
Genres
Comedy, Romance
Romaji
Tenkousaki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken
English
Oh Boy, Was I Wrong About Her
Native
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
Synonyms
Tenkosaki: The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy
Tenbin

External & Streaming links

Relations

ALTERNATIVE
Tenkousaki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken
MANGA · FINISHED
SOURCE
Tenkousaki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken
NOVEL · RELEASING