Takashi is the eldest son of the current leader of an infamous mafia in Japan, so powerful that they have affiliates and businesses in all Asian countries. That late evening, after a business trip, he visits his parents' old house, finding a very attractive stranger taking care of his younger brother, Haru, ten years old. It was his new nanny.

"Hm, do you also accept taking care of older boys?"

He asked, puffing on a cigarette as he leaned against the doorframe and smiled mischievously.