Asteria

Hi guys can I ask some favor if someone know the title I been looking for, I forgot the title.
It was about like some kind yakuza I think this is BL, and the Top is the Scary male because if someone Touch his Bottom and I really don't know the plot I forgot . I just remember something that when the bottom don't like to go outside but the top purchase the bottom to go to the museum and then the bottom go to the bathroom but the bottom meet some bastard and he punch or something the bottom din the top arrive and when he saw that he punch the bastard but the bottom stop hindi because he almost kill it( although he order his subordinate to put him in a place where the top will do something crime) and then when the bottom stop him he is pissing in his pants because he is afraid I think.

This is about that I think their are friend or brother, this is about that this man is having sex with his partner and then their mother come home and the mother came up to the upstair to talk something to him and then the man didn't stop and this man don't care that be found out by his mother but his partner he cared to be found out by his mother so he punch the man in the face and then the partner came out to the door to talk his mother and then when they done talking and then the partner hate the man and then he said to the man that don't ever came near me again and then the partner go to somewhere place to forget that manaand then in past year came the mother called the partner that his brother has never called home and then the man became like a beggar and then the partner saw the man and the near of the side places and people talking to him how smelly of him and then the partner saw the man and go near him and then he took him to the partner house and then took him to take a shower and then I don't know what is the rest,
Please guys please help to find this manta.

P.S this genre is yaoi or shounen air..