Natsu, who is awake and discreet, has a shy personality that cannot be denied. One day, he confessed to Sato, the same department, and they started dating. Natsu, who often wears smooth glasses and has a tangled, managed hair when he sees Natsu's skin color, and acts of excessive sexual harassment begins the next day. Natsu, who could not refuse, gradually developed her breasts and immediately fell into pleasure when she was trained in her constitution.