As summer melts into fall, Yoshin and Nanami gear up for their high school culture festival. Meanwhile, the class rep's transformation into a gyaru is spurring on rumors about a "Misumai Harem." Nanami can't help fretting even though she knows the rumor is untrue. To combat the gossip, our couple decides that Yoshin should throw himself into the festival prep and get to know his classmates better. To their shock, however, the class gets a little too carried away and votes to put on a cosplay café. Fortunately for Yoshin, all his hard work will be rewarded with an unexpected surprise from Nanami! Anything is possible when there's cosplay involved at the lovebirds' first culture festival together!