We will surely have a happy ending
きっと、幸せな結末 · きっと 、 しあわせな けつまつ
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Having barely escaped being killed before birth by his parents, he thinks he’s used up a lifetime worth of good luck... Sumire, a bartender who attracts only good-for-nothing men, has given up on happiness. Estranged from his parents, he should have gotten used to being alone... But a distant relative who’s a university student, Yuushin, comes to spend some time with him, and Yuushin’s feelings for Sumire grow stronger and stronger... A heartrending age-gap romance.
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections