Very delicious way of inteperating the theme. My attention wasn't on the dialogue at all but on the man' tits. Nice tits, oh sorry, nice artwork!
The game's principle is easy to understand and feel the fun. I'd recommand to add something when or after player delivers all the sushi to the customer. That'll define the tone of the story and give it a little more human touch.
Overall well done, I won't be able to forget about the tits for a while