Banri und Koro, die verloren durch die Berge irren, werden von Linda-senpai gerettet, die zufällig wegen eines Ausflugs des Festival-Klubs in der Nähe ist. Die beiden kehren sicher nach Hause zurück. Als Banri am nächsten Tag in der Universität ankommt, erwarten ihn ein besorgter 2D-kun und seine anderen Freunde.
After being found by Linda, she explains that she was out on a club retreat with the Festival Club, and brings Banri and Kōko to their campsite. After returning, Banri is greeted by Nijigen, Mitsuo, and Chinami, who are all relived to know both he and Kōko are alright. Later during a break, Banri, Mitsuo, and Chinami get together to talk, but they are interrupted by Kōko, who begins to berate and belittle Chinami, causing Mitsuo to leave with Chinami, leaving Banri to comfort a remorseful Kōko. After classes, the pair is once again met by Linda, who invites them to participate in one of the Festival Club’s dance rehearsal, which afterwords makes Banri decide to join, with Kōko thinking about joining. Later that night, Mitsuo tells Banri he will settle things with Kōko, because he wants to pursue a relationship with Chinami, and the next day Mitsuo flatly rebuffs Kōko’s affection in front of Banri. Kōko asks Mitsuo if their time together meant nothing to him, and Mitsuo replies that while he treasures their time together, he only sees her as a childhood friend. Kōko angrily yells at him to forget their history, resulting in Mitsuo leaving, and Kōko yelling at him to disappear, but realizes her words were hurtful to Banri, causing her to continuously apologize in tears. After a few hours, Kōko and Banri are invited by a girl called Nana, to her concert, and Kōko goes to vent her frustration, but is thrown out, and spends the night at Banri's apartment. During the night, Banri and Kōko talk, where Kōko reveals she needs him, while Banri confesses his love for her. After she leaves, she texts Banri encouraging him to not forget about his lost memories, which motivates him to return to his home in Shizuoka, where he finds a scrapbook containing pictures of himself and Linda in high school together.
Banri et Koko ont été sauvé par le club des festivals et retournent à l'université. Koko se montre de plus en plus insistante avec Yana. Mais celui-ci a décidé de prendre définitivement ses distances avec la jeune-femme. En effet, il est tombé amoureux d'une autre.
山の中で迷っていたところ、たまたまおまつり研究会の合宿に来ていたリンダ先輩に助けられた万里と香子は、無事東京へと戻ってくる。
翌日登校した万里を待っていたのは心配した二次元君たちだった。
皆に一通り事情を説明し終わり、柳澤と千波が親しげに話していると、突如柳澤の背後からキレた香子が現れて…！？
한밤의 탈출사건 이후 코우코는 미츠오에게서 받은 문자메시지로 들뜬 나머지 미츠오의 앞에서 오카 치나미와 싸우는 큰 실수를 저지르고 만다. 급기야 미츠오는 코우코와 이야기를 나누고 그녀의 자신을 향한 마음을 부정해버리고 만다. 코우코가 크게 상심한 그날 밤, 반리는 코우코에게 고백한다.
Tras encontrarse por casualidad con Rinda, Banri y Koko se enteran de que su senpai forma parte de un club dedicado a los festivales japoneses. Y cuando parece que todo va bien después del susto de la secta, Mitsuo está cada vez está más enfadado con Koko, sobre todo cuando la chica estalla de furia debido a Chinami.
万里和香子在山里迷路时偶然遇见了在祭祀研究会里合宿的琳达前辈，在前辈地帮助下平安的返回了东京。第二天上学的时候，二次元君就非常担心万里和香子。大家说明情况一结束，柳泽和千波亲热地交谈着，突然香子从柳泽的背后生气的出现…！？
