Alight I've been looking for this one yaoi manga for a couple days and I only remember parts and pieces because its been so long since I've read it...

The manga is kinda a yakuza/comedy about (from what i can remember) a yakuza son who is going to take over from his father and one day he bumps into this sweet looking guy and ends up tearing his pants, which the sweet looking guy sews for him. I don't remember a whole lot but I remember that the sweet looking guy was pretending to be sweet so that he could take over the yakuzas gang or something because he was also the son of a yakuza but the son would get sick all the time so hes weak? All I really remember was the end when the "manly" yakuza went to the originally sweet guys house to propose to him but accidentally proposed to his dad. The ending picture is funny in that the yakuza son has both the dad and the sweet guy on his arms...

Well I really hope you can help meeeee

It's the fifth chapter of Katappashi Kara Zenbu Koi.
P.s I liked this story very much xD

AAAHHH thank you so much you saved me so much time.
P.s I know right I'm in love with how sweet it is