Bundled with the 21st and 22nd volumes, the OVAs adapt the Earth arc of the manga.

The members of the Amusement Club are back with more of Kyouko Toshinou's antics, Chinatsu Yoshikawa's schemes, Yui Funami's retorts, and Akari Akaza's small social presence as they strive to make each day as fun as the last! Whether the activity is an arm wrestling contest or making pancakes together, the group of entertainment-seekers are sure to give it their all. The club members are often joined by their friends in the Student Council, who know how to have a good time as well. While it can get a little chaotic when all eight girls get together, it sure doesn't stop them from meeting up and having fun! [Written by MAL Rewrite]

Extra episodes of Yuru Yuri Nachuyachumi!

Even during summer break, the Amusement Club lives up to its name! When Akari Akaza, Kyouko Toshinou, Chinatsu Yoshikawa, and Yui Funami find a camping tent, they decide to put it to good use by spending the weekend outside in the mountains. When some student council members catch wind of this, they are invited to come along as well. After a very long journey, the group arrives at their destination and is ready to make the most of their trip. They engage in classic camping activities, such as outdoor cooking and tests of courage, and finish it all off with a visit to the hot springs. An extravagant trip like this doesn't happen every day, but the Amusement Club is sure to savor each moment. [Written by MAL Rewrite]