Ohayou to Oyasumi to Sono Ato ni trip
おはようとおやすみとそのあとにtrip · おはよう と おやすみ と その あと に とりっぷ
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
After six years living together, Kaito wants to take Isuke to Utrecht, the Netherlands, to introduce him to his father. Isuke agrees excited since it will be his first time travelling abroad. The new landscape, the two of them alone… It’s almost like a honeymoon.
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections