I forgot the title but the story revolves around a police officer who was framed for the murder of his partner at work so he ended up in prison but also he has a mission to complete to get out I think. He fell in love with a guy inside of there..I think they eventually got out. This manga has a novel I think.
I like this a lot
Yes I’m looking recommendations like this and childhood friend complex ლ(´ڡ`ლ)