15화: 문학부 해변 여행과 산 벌 잡기 모험
2015년 7월 11일 방영
With the arrival of summer break, the Literature Club, along with Kyon's little sister, go on a trip to the beach, staying at Tsuruya's beach house. The next day, the group head for the mountains for some bug-hunting before participating in a test of courage. Rather than the ghosts one would expect, the pairs actually end up coming across a group of beautiful fireflies. (Source: Wikipedia)