Help me search for this manga ... from what i remember  male lead  father owes debt to the gangster boss  but he vanishes so his son  is held in the house with a chain because he says that he will go ahead and look for his dad and also pay the debt but the boss doesnt trust him so he keeps him chained in the house but the chain is extremely long and he is able to move all around on  the first level of the home but unable to go to the second level where the boss is , so everyday when the boss comes down stairs  the male lead shouts at him saying he will leave here and look for his dad but the boss just ignores him and goes to work ........... I think  thats all i can remember  any suggestions ?
hey guys can you guys give me some bl sm** recs ? possible with the gangster and so on if not I accept all others
