Haru to Yuzu wa Mada Shitenai
ハルとユズはまだシてない · はる と ゆず わ まだ してない
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Haruhito and Yuzuki are childhood friends who just started dating. Just when their feelings finally got requited, and their relationship seemed to be smooth-sailing, Yuzuki feels frustrated that they haven’t shared the kind of closeness most couples have... So he tries to take the initiative, but it seems like Haruhito has some issues...?! (Source: Overlap, translated) Note: Includes one extra chapter.
Source: AniList
External databases: AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections