Maruko to Suugaku Ouji
マルコと数学王子 · まるこ と すうがく おうじ
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Momose is a Math genius! He thinks all things can be calculated... It was like this until he met Maruko Ai, a chaotic girl who believes in "love angel" and other things. Maruko has a one-sided love for Momose's childhood friend and now Momose is surrounded by many problems he can't calculate. And the problem is even bigger... Is it love?!
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections