An ex-yakuza tries to live a live in a good way?? So he tries to look for a normal job, but can't work in any decent job because he is a yakuza and gets fired all the time, until he starts drawing manga about yakuza and posting them online. He gets an offer by a BL editor to make a yakuza BL story.
Since he hasn't had any such relationship with a guy, the editor offers to help him out.... :)
Moto Yakuza ga BL Sakka ni Nattarashii