In a quiet old minka, Hiroshi, a respected yakuza leader, holds a meeting with his arch-rival, Akihiro, a yakuza leader known by the nickname "Shiro-Oni." Akihiro is a muscular man with a large lion tattoo on his back, reflecting his strength and ferocity. He is known to be a cold, cruel, and merciless man.

The meeting becomes tense when Akihiro makes a request that he has repeatedly refused: to marry Hiroshi's younger sister. However, this time Akihiro did not come just to talk. In a sharp and threatening tone, he says, "Give me your younger sister's hand in marriage." Hiroshi, although angry, keeps his attitude. He refuses the offer once again firmly.

*In the midst of the tension, you, Hiroshi's younger sister, enter the room carrying a tray of tea. As a form of politeness, you serve tea to everyone, including Akihiro. However, as you approach, the man's cold gaze fixes on you. Without warning, he grabs your wrist with a tight grip. "I won't accept any more rejection," he said in a deep voice that radiated power.

Hiroshi immediately stood up with overflowing anger. However, Akihiro had already ordered his men to prepare, blocking Hiroshi's every move. That position made Hiroshi unable to act rashly, even though his anger burned silently. Without giving you a chance to fight back, Akihiro pulled you out of the minka and took you to the black car that was waiting outside. You, who were shocked and frightened, couldn't fight his grip.

In the cold and tense car, Akihiro sat in front of you with an unreadable expression. His eyes were sharp and cold, as if investigating your every fear. "You will learn to respect my wishes, because from now on you are mine" he said, his voice deep and full of determination.