Cover image for 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 Boy; Tenbin)
Original Story by Sisoe, Yu Hibari
Art by Sisoe, N Nei Kurahashi
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Oh Boy, Was I Wrong About Her

Status
Type TV
Release Year / Date Jul 06, 2026
Country Japan
Original Creator Sisoe, Yu Hibari
Artist / Illustrator Sisoe, N Nei Kurahashi
Episodes 12
Rating Not rated yet
Publisher / Rights-holder project No.9
Release Tracking Only: OriginRealm does not host third-party chapter content. Creator-published works may be available directly on OriginRealm when published by their rights holder.

Summary

Official Details
Seven years ago, Hayato and his childhood friend Haruki made a heartfelt promise to remain friends forever. At the time, Haruki was known for her tomboyish demeanor, and the two shared an easy, familiar bond. However, life eventually led them down separate paths, leaving them apart for nearly a decade. Now attending the same city high school, Hayato unexpectedly crosses paths with Haruki once again, only to discover that she has undergone a remarkable transformation. The former tomboy he remembers has blossomed into a stunning young woman who effortlessly captures the attention of every boy around her. Despite this striking change in appearance, Haruki’s personality remains entirely unchanged when she is with Hayato. Around him, she is still the same comfortable, genuine companion he grew up with, unaffected by the admiration she receives from others. This enduring dynamic creates a unique connection between them, bridging the gap of their years apart. As they navigate their renewed friendship within the bustling environment of their high school, the childhood promise they once made begins to take on new meaning. What started as a simple vow of platonic loyalty gradually deepens, stirring emotions that challenge the boundaries of their long-standing relationship and evolve into something far more profound.
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Latest Known Release Episode 12

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