Hachiman has a small crisis concerning little sisters and what they mean. Afterward he receives a mysterious text, outlining the club’s next student request.

Hachiman and Yui check on Yukino. Later, Hachiman shakes things up with the committee when he decides to alter their mindset.

A mysterious request to helm the upcoming sports festival arrives. The group must band together to figure out a way to pull it off.

Hiratsuka-sensei asks the volunteer club to help her contribute to a local magazine themed around marriage. Since none of them, including Hiratsuka-sensei, knows anything about the subject, they ask someone who has experience "taking care of useless deadweight", namely Hatchiman's sister Komachi.