Child X Adult Equation
こども×おとなの方程式 · こども かける おとな の ほうていしき
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Chiharu and Satoshi are childhood friends since preschool. Raised as the only son of the Nanjou family, Chiharu was a crybaby. Satoshi on the other hand was a tough, rambunctious child who loved playing soccer more than anything else. Nowadays Chiharu is popular with the girls, unlike Satoshi. But he has a secret crush that he can't let anyone know, especially Satoshi. Watch as Chiharu's coming-of-age story unfolds, and how he gets his entire family involved. (Source: Manga Club) Note: Includes the one-shot "Otome Danshi no Houkago Lesson (Girlish Boy After School Lesson)".
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections