Mika, a close friend of his mother, came over to visit. To his surprise, she was much younger than expected—slender, stunning, and unexpectedly beautiful. Kouta had assumed his mother's friend would be just another unattractive middle-aged woman, but the moment Mika appeared, he was left breathless. Dazzled by her beauty, he became so absorbed in romantic talk over dinner that he barely noticed the meal. Suddenly, Mika suggested practicing kissing. Confused but unable to refuse, Kouta gave in—and that single step changed everything.