1x23 - Golden Time

Banri confronts Kōko; Kōko explains the reason why she decided to resign from the Festival Club is due to Banri's unwillingness to be in the same place as her. Banri reveals to Kōko that his memories from before his accident are returning and he would eventually return to his former self; his memories since the accident will disappear. After Banri thanks Kōko for all they'd shared together, the two agree to become friends with Kōko revoking her resignation from the club. Kōko promises Banri that she will stay by his side as long as he doesn't forget her. Afterwards, Banri tries to patch things up with Mitsuo, who had not contacted him since he revealed to Mitsuo his past with Linda. Meanwhile, with their school festival fast approaching, Banri's condition worsens, much to Kōko's fright. Nijigen, bewildered by his friends actions and is feeling left out of what's happening, intends to have a get-together to revive their friendship. Banri suffers another memory break and runs away — calling out desperately for Linda. After returning to his senses, Banri plans to return to his hometown, feeling certain that his memories and former self will return. During their school festival, the festival club receives support from the private school committee thanks to Mitsuo. Meanwhile, Banri reconciles with Mitsuo. During the Awa dance performance, Banri narrates how moments and feelings are born and later die. Afterwards, Banri states that he indeed returned to his former self with his memories since his accident now lost. (Source: Wikipedia)