Yuru Yuri Nachuyachumi!
Yuru Yuri OVA
Yuru Yuri Summer Vacation!
ゆるゆり なちゅやちゅみ!
Upon finding some camping equipment in the clubroom, the Amusement Club decide to go camping together for summer vacation, with the student council deciding to tag along. After spending the day making curry, the girls form pairs to go on a test of courage before hitting a bathhouse together.
(Source: Wikipedia)