Responses
There're many ONS-Uke. I'm not sure which one you're looking for.. Just randomly pick some up
http://www.mangago.zone/read-manga/kiken_na_otonarisan/tr/111624/page/110/
http://www.mangago.zone/read-manga/yuki_no_shita_no_qualia/
http://www.mangago.zone/read-manga/usotsuki_na_kimi_no_toriko/
Any yaoi mangas where the uke only have one night stands because he was afraid to fall in love, but ofc he falls for the seme in the end :3