It was a Yaoi manga where the uke had ed and seme agreed to help. The difference from other comics was it actually took several chapters before he started to actually function normally during sex rather than as soon as they met the seme.
Was it https://www.mangago.me/read-manga/love_me_doctor/or perhaps https://www.mangago.me/read-manga/uchi_no_wanko_ch_ky_sakusen/
It was a Yaoi manga where the uke had ed and seme agreed to help. The difference from other comics was it actually took several chapters before he started to actually function normally during sex rather than as soon as they met the seme.