Ohayou to Oyasumi to Sono Ato ni p.s.
おはようとおやすみとそのあとにp.s. · おはよう と おやすみ と その あと に ぴーえす
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
It’s been six years since Kaito and Isuke started living together. The mornings are always hard, but every new day brings some changes and surprises.
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections