Any BL where the top is obsessed with the bottom's ass
https://www.mangago.zone/read-manga/majouu_school_days/ (its pretty old) https://www.mangago.zone/read-manga/shiri_fechi_nanka_ni_sukarete_tamaru_ka/ https://www.mangago.zone/read-manga/suki_dakara_itte_hoshikunai/ https://www.mangago.zone/read-manga/abunage/
Wait actually i'm not sure about the 3rd one
https://www.mangago.zone/read-manga/hentai_shinshi_to_kisekae_dansho/
Tysm guys
Any BL where the top is obsessed with the bottom's ass