Nasa's knowledge is a big help to the people around him, but even he's not sure about the list Kaname finds on the internet that describes the symbolism behind different kisses.

Scorching summer heat motivates the Yuzakis to purchase a new air conditioner, which ends up resulting in some new encounters.

After Tsukasa grapples with her technological anxieties, the Yuzakis are greeted by two different visitors.

In an attempt to help pave the way for Yanagi-sensei's wedding, Nasa ends up teaching a programming class at a girl's high school.