After being approached by a boy with a love letter, Himeno is reluctant to accept it because she is worried about how her horse half would look naked. Hearing about her complex, Nozomi and Kyouko propose that they look at each other's private parts to put Himeno at ease.

Himeno goes to an archery meet with her underclassman, Ayaka Wakamaki, who acts strict towards her. Following some advice on her friends, Himeno helps Ayaka to loosen up by offering to go on a date with her.

The girls participate in an RPG fantasy setting, fighting against monsters in a dungeon labyrinth, which turns out to be a story written by Mitsuyo.