I've been reincarnated without my knowledge due to the fire accident tried to protect my baby cousin from burnt to crisp till I discovered that I have indeed reborn to a certain family and become involved into mafia somehow thanks to my baby brother. I am taking this advantage to have lot of fun with this and embarrass my baby brother just for bonus.

Komatsu has a childhood friend who stick with him through the adventure, even knew about her other job beside her part-time cook with him. Even know about her deep secret but when his childhood friend caught the eyes of Four Heavenly Kings. What is her other job that cause her to keep it a secret?