Mami, despite being held back by her childhood friend Hikaru, is drawn in by the temptation of marrying wealthy Kazuya if she passes a week-long bride training. She heads to his mansion, where she is awestruck by the magnificent decorations and luxurious interior. Kazuya falls for Mami's appearance, seduces her, and removes her clothes, marking her first successful trial. In that moment, Mami senses the beginning of a new romance.