Oku-sama wa Joshi Kōsei

Oku-sama wa Joshi Kōsei is a Japanese manga series written and illustrated by Hiyoko Kobayashi. It started in the supplementary edition of Shueisha's seinen manga magazine Weekly Young Jump, Young Jump Zōkan Mankaku in January 2001, and transferred to the main magazine in October of the same year, concluding in March 2007. Its chapters were collected in 13 volumes. The series centers on a couple whose age difference makes it difficult for them to further their relationship, as one is a high school girl and the other is her physics teacher.

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