Junior college student Rio (Konatsu Kato) has started living alone in Fukuoka City and one day, she bumps into her next-door neighbor, Kohei (Sou Okuno), at the entrance. He is "so handsome... " Rio's heart was instantly "swooned" and her excitement for her new life grew even more. Rio's crush on Kohei is unrelenting, but she can't muster up the courage to take the first step. Then one day, a big development occurs that changes the situation! Rio, who majored in nutrition and is a good cook, was invited to cook dinner at Kohei's house.