1x21 - Golden Time

After the incident at the Awa dance festival, Banri fears losing himself as his memories from before his accident return. Kōko tries to comfort Banri by having dinner with their friends at his apartment as he plans to tell them about his background and other recent troubles. Things go sour when Barni tries to invite Chinami but agreed to come nonetheless. At Banri's apartment, Chinami arrives earlier as planned as she plans to have a serious conversation with Banri before the others arrive. Chinami confesses that she felt relieved after seeing Banri being friendly with Linda as she was in love with Mitsuo and felt regret when she changed her appearance after cutting most of her hair. Following her outburst, Chinami asks Banri to film her in her dejected state. As Banri intends to tell Chinami about her past with Linda, Banri is possessed by his former self and begins calling out for Linda. He storms out his apartment but not before telling Linda and the others to not tell Kokō that his memories are returning, not realizing that Chinmai was filming the conversation. Kōko refuses to accept the ring Banri had presented to her and seemingly ended their relationship. (Source: Wikipedia)