Oh Boy, Was I Wrong About Her Light Novel Closes After 11 Volumes

Yu Hibari has put the last period on the childhood-friend mix-up that launched a thousand title recitations. Kadokawa's Sneaker Bunko imprint shipped the eleventh and final volume of Oh Boy, Was I Wrong About Her on July 31, closing a print run that began in February 2021. Fans also know the series as Tenbin, a merciful nickname for the marathon Japanese title Tenkou-saki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken.

The story started even earlier as a web novel on Shōsetsuka ni Narō in June 2020. Hibari posted the last epilogue on the same Friday the tankōbon hit stores, so the web and print versions bowed out together. Shiso, also credited as Shirakomiso, handled the illustrations from the first Sneaker Bunko volume through this farewell.

At its core, the romcom follows Hayato Kirishima, who grew up in the countryside treating his inseparable playmate Haruki Nikaido as just another boy. Years later Hayato transfers into a city high school and finds Haruki again — only now she is the campus ice queen, and she was never a boy at all. The two pick up a promise they made as kids, while the rest of their circle, including Hayato's fashion-conscious sister Himeko, keeps the summer-after-summer mood spinning.

Kina Oyama's manga adaptation, which ran on Dra-Dra Flat♭, already wrapped in seven collected volumes. The timing is still bittersweet for anime-only viewers: Project No. 9's television series premiered on July 6 and is currently streaming on Crunchyroll, so the source novel has finished just as a new audience is meeting Hayato and Haruki for the first time.

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