Itatani-san to Ushiyama-san
板谷さんと牛山さん · いたたにさん と うしやまさん
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Two girls, Itatani-san and Ushiyama-san have bipolar characters and bodies...but they have the same worries about "a certain part of the body". This is a super healthy medical comedy which reduces girls' worries about their body which they can't say to anyone else.
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections