It was actually quite rewarding; the whole house husband thing. Was it as rewarding as Yakuza work?

Probably a bit more. At least Tatsu would get hugs and kisses for doing this work (instead of nearly killed/almost arrested).

He got to spend his whole day with Gin, at home, having a quiet life. And then on weekends he got to hang out with his wife (the coolest woman alive). Not a bad gig.

Tatsu found comfort in cleaning the kitchen floor. So much for the Immortal Dragon.