My son already has a wife. He confessed that his son had sexual feelings for him, his mother. Although they refused at first, they gave in to his son's persistence and lied to their families saying "If it's just one time..." and came to the inn. It's been a long time since Tsubasa had sexual intercourse, so she wasn't confident... Kissing for the first time in a while, the warmth of embracing each other, the contraindications of being a mother and the pleasures and conflicts of being a woman. Shake it down...
