Koiito Kinenbi - Episode 1

Yuchi is a high school student who has fallen in love with the landlady, Kanako. As it turns out, she's interested in him as well. Kanako's mother wonders if her boyfriend would leave her daughter for someone younger. And she herself became curious about what kind of a guy he is. So she decides to arrange a check-up for the newly made couple, inviting them to visit the hot springs. As it turned out, the mother is also going with them, together.