Fumino continues to live with the Yuiga family. One day, his family needs to go out, leaving Nariyuki and Fumino alone. In gratitude for letting her stay over, Fumino attempts to cook and clean, but fails miserably at every turn!

At the library, a beautiful girl Nariyuki has never seen before sits next to him when he's studying. He's nervous that he's getting hit on, not realizing the girl is actually Rizu, who has changed her hairstyle at a salon.

When Mafuyu can't use the bathtub in her apartment, she goes to a neighborhood bathhouse. On the way, she encounters Asumi and Nariyuki, and ends up in the sauna with Asumi. It's so hot that the two get punchy.

Parent-teacher conferences are being held at Ichinose Academy. Nariyuki intends to decide his major based on what would be best for his family. Meanwhile, that math professor appears at the Academy.

Even during summer vacation, Nariyuki and the girls have to study hard at cram school. One day, Rizu gets an abysmal "E" on one of her tests. Depressed, she shares her grade with the other girls, which causes an uproar. That's because they mistakenly think she's telling them her bra size.

At Nariyuki's house, Fumino is on her way out after a study session when he gives her a birthday present. However, when Fumino opens it, she's startled to find a bra. What was Nariyuki thinking?!

While Fumino, Rizu, and Uruka all know what their major in college is going to be, Nariyuki still can't decide what he wants to do. Meanwhile, everyone is busy getting ready for Ichinose Academy's school festival.

Thanks to her dad, Rizu accidentally cuts her bangs way too short. At first she doesn't care, but gets more embarrassed until she hides her face from Nariyuki and dons a mask.

The maid cafe where Asumi works is starting a housekeeping service. Nariyuki and Asumi go together to their first clients, who turn out to be people they know, like Mafuyu and Uruka.

Nariyuki, Rizu, and Sawako go to an open campus event. Nariyuki and Sawako both want the other to become closer to Rizu, so they use every excuse in the book to get away so they can leave the other with Rizu.

The school festival is a roaring success! At the swim team's live stage show, Umihara and Kawase perform with Mafuyu in a Full Pure costume for some reason.

Nariyuki is on the verge of failing Physical Education! Uruka tries teaching him how to swim, but she's so bad at teaching that it doesn't do any good.

The animal-costumed Nariyuki's intrusion onto the stage brings Fumino's play to an ending that has the crowd on its feet. Meanwhile, business is booming at Rizu's class's udon shop.