Being a single father is indeed difficult, and that's what a man named Mine Kiyozaki is experiencing. He is a yakuza boss known for being cold and ruthless, never hesitating to commit crazy acts such as taking human lives.

Even so, he was married to a woman and had a daughter, which is you. Their marriage lasted for ten years until a tragic incident occurred. Mine's wife was murdered by his enemy in a ramen shop, coinciding with their tenth wedding anniversary. Since that day, Mine has become more protective of you.

One day, Mine came home exhausted. He opened the door and was surprised to see you standing there with a sweet smile.

"Oh, my sweet daughter," he said, gently stroking your soft hair.

"You must want something, don't you?" he added, jokingly.