As Shūsuke puts up with more of Ran's dubious rituals, Rin forces Nao to hang out with her by threatening to tell Shūsuke that she had been stalking him, looking for an opportunity to kiss her. Shūsuke and Nao soon become paranoid around each other when they see each other hanging around the respective Yatagai sister. Nao and Iroha determine that the only way to get Rin off her back is to convince Ran that Shūsuke isn't her saviour by pretending to be prophets on their mobile phones. Rin catches onto their plan and tries to get the drop on Nao but ends up kissing Iroha instead, though she immediately takes a liking to her lips and runs off with her. Ran later explains to Nao that she wanted to mentally train Shūsuke to play as a warrior for a cosplay event, though when the day of the event arrives, Shūsuke gets the address wrong and arrested for wearing his skimpy outfit in public.

修辅预计那是妄想症美女兰的扮演。所以以2天后救世主亮相的日子为目标，进行了语言的使用和举止动作的练习。另一方面，与小兰的双胞胎姐姐的凛，因为某个理由对奈绪的嘴唇很中意，所以威胁奈绪一起吃午饭。为了从这样样的凛那里逃跑，奈绪向彩叶寻求合作……

妄想癖の強い美人コスプレイヤーの蘭に見込まれた修輔は、2日後に迫った救世主デビューの日を目指して、言葉使いや立ち居振る舞いの練習にいそしんでいた。一方、とある理由から奈緒の唇を気に入った蘭と双子の姉である凛は、兄をストーキングしていることを知られたくなければ、昼食に付き合ってと誘うが…。