Responses
Have you read this one? :D
http://www.mangago.zone/read-manga/gintama_dj_mienai_kusari/
Oh...dear. Another 1 of Guro-chan's victim :P :P Anyways, for what you are looking for, try here - http://www.mangago.zone/home/mangalist/57857/
Check out the ones having "confinement" mentioned in the review notes.
Yaoi mangas where the seme locks away the uke and makes him his slave. Yeah it seems kinda dark but that's what I'm in the mood forr ╮( ̄▽ ̄)╭