Majimena Yakko Hodo Kusuri no Kiki ga ii Rashii

Shimizu and Satou are already in a relationship, but they have not yet shared their first night together. Due to his impatience, Shimizu used a strange drug on Satou, causing him to lose control and pin Shimizu down...

This manga was published on X as and Oneshot on BOOTH but the author has already deleted her account as well as the manga on BOOTH.