PLS HELP ME SEARCH THIS MANGA IMMM DESPERATE

so ive read this manga before but its been like some time and i kinda forgot ab it but i rlly liked the plot. and i hv been searching for hours. okay so basically i remember the top was a killer? and he found bottom in this house where he was naked, and well the bottom was raised like this all his life as a sex toy. so then the killer decided to take him home and stuff. and i remember tht the bottom wouldnt even talk like he dont know how to. and the top literally taught him and all. and i remember in the end the bottom helped the top w his mission by seducing one of his target or smth. IF ANYONE HV ANY IDEA ON WHT THIS MANGA IS PLSSS PLSS TELL ME
（/TДT)/