est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
The oldest of the twins, Ikurou, is at the top of his year in academics. While the younger brother, Akaya, is below average, and Ikurou holds a superiority complex with him. However, when he feels Akaya’s gaze on him, he is reminded of what happened five years ago, when Akaya asked him, “Can I touch you,” and Ikurou feels driven into a corner. When he finally snaps and scolds Akaya, he just casually changes his lifestyle and says that he will surpass his older brother in grades. And thus a bet is placed, with the promises of a reward...
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections