Responses
i think it is room to room or window to window, no it is definitely window to window were he catches his bestfriend.
It's not on a tiny Island with the sea but maybe : http://www.mangago.zone/read-manga/houtou_musuko_to_koi_no_ana/
thank u both those weren’t it but i found the one i was talking about http://www.mangago.zone/read-manga/hi_no_ataranai_basho/ I GAVE A REALLY BAD DESCRPPTION LOL
okay so i THINK it was about this dude returning to his old town and it was like this tiny island close to the sea or wtv and i THINK he catches his friend or someone who used to be his friend masturbating in a room where he works or sum so if anyone remembers pls drop