Money to support her sister. The sister seems to like to touch but she will be obedient and study hard. But it is different from what Kana thought, the older brother often gambles and joins gangs. One day, he returned home in fear. When questioned, Kana discovered that her sister had stolen her brother's money and spent it on gambling.

He invited you to meet him, and he certainly would not save your life. Kana decided to go with her sister to see the boss to apologize for loving her sister too much. When she saw Kana, her grandmother was impressed by her beauty. He agreed to forgive her brother's debt, but only on one condition. I mean, you have to become a girl in ten days!!! Then her new life began. She is only allowed to wear sexy lingerie or go nude so she can seduce whenever she wants, even in front of her juniors.

But the pleasure of her brother's big and strong cock is something her boyfriend cannot give her.