第 4 集: 一場自行車競賽決定 Natsumi 是加入新社團還是游泳社。
2017年1月28日 播出
Now that Hiromi and her friends have established a bicycle club, they need to find members and a faculty adviser. Shiki-sensei agrees to be their adviser, but the swimming club begins aggressively recruiting Higa Natsumi from their club. It comes down to a bicycle race for Natsumi. (Source: Crunchyroll)