As Tsukasa waits for Nasa to return home, a young girl named Chitose, who calls her “Nee-sama” confronts her. Chitose asks for Tsukasa to come home with her, and after being ignored, encounters Nasa. He tries to cheer her up, but after learning that Nasa is the one married to Tsukasa, Chitose’s attitude suddenly changes. As Nasa tries to explain, Chitose shoves him into a black car that then drives away.

Nasa and Tsukasa take an overnight bus to visit his parents in Nara. They attempt to enjoy the trip like a honeymoon, when Chitose shows up at a service area, asking to know why Tsukasa married Nasa, who happens to overhear the conversation and begins to wonder the same thing. As the couple attempt to enjoy seeing the sights in Kyoto, Chitose appears again. She attempts to test Nasa to see if he’s worthy to be married to Tsukasa, and he explains why he decided to marry her.

Nasa and Tsukasa arrive in Nara and head to the Yuzaki family’s house. Despite demanding to meet Tsukasa, Nasa’s parents, Enishi and Kanoka, are both clearly nervous. And not long after introductions, Enishi ends up making a deal with Tsukasa.

Nasa suggests takoyaki party to the Arisugawa sisters so that everyone can get to know each other better. Meanwhile, Chitose tracks Tsukasa down to the bathhouse. The game-loving Aya finds herself getting along with the two of them, and before long competitive sparks start flying!

Tsukasa and Nasa head to a big-name theme park, where they have a run-in with Nasa's old teacher, who might be in the middle of her own romantic encounter.

The Kusatsu trip continues, but will Nasa work up the courage to ask Tsukasa to join him in the hot springs?

Nasa is forced to consider how verbally intimate he is with Tsukasa, before Kaname encourages the two of them to get physically intimate in the bathhouse after-hours.

After a texting mix-up, Nasa is recruited to help one of his students confess her feelings to the guy she likes.