Murasame Sumika is popular in the high school for her excellence in the marks and sports. However, she has a secret: she is in love with her classmate Kazama Ushio. Ushio also has a liking to the love between girls, but she hasn't noticed Sumika's feelings and has always been refused by other girls.

The OVA will be bundled with the 7th volume of the manga, scheduled to ship on August 26, 2015. It will be a sea bathing episode. (Source: MAL News)

The anime film will feature the familiar characters from the franchise now grown up, and reuniting to construct a campsite.