I already know I'm gonna love this. This author fucking rocks. Baby tiger boy seme and kind older bunny onii-san uke.
Basically, baby boy encountered a tragic incident. His dad, a yakuza's head, got betrayed and killed. While the situation is ambiguous and dangerous, his mom took him to another city. Bunny onii-chan saw the boy and comforted him and stuff. When the situation was sorted, they went back home. Years later, tiger boy came back bigger and hotter with a simple mission <3
Gokutora no Honey Bunny