I forgot about it but all I remember is that a guy is using an adult toy and he doesn't know (or maybe he knows sorry I just forgot about it) it's connected to someone
https://www.mangago.zone/read-manga/saeki_kun_ni_tsunagatchau/ ?
Or this one https://www.mangago.zone/read-manga/link_in_the_hole/
This one thank you very much ε=ε=(ノ≧∇≦)ノ
I forgot about it but all I remember is that a guy is using an adult toy and he doesn't know (or maybe he knows sorry I just forgot about it) it's connected to someone