Sueharu confesses his feelings to Shirokusa, but she already has a boyfriend. Kuroha, Sueharu's childhood friend, helps him create a plan to get back at the couple.

Sueharu confesses his feelings to Shirokusa, but she already has a boyfriend. Kuroha, Sueharu's childhood friend, helps him create a plan to get back at the couple.

During the day of the cultural festival, Sueharu spends it nervous over the confession festival, and he realizes he made a massive misunderstanding; as the confession festival prepares to begin, Kuroha makes an unexpected move.

Sueharu thought he had carried out his plan to perfection at the confession festival, but what he thought was just a little idea of his own ended up involving everyone around him, and when he confessed to Kuroha, she rejected him.

Kuroha's younger sisters abruptly visit Sueharu's house to tell him that she has developed amnesia; all her memories from summer break onward are gone, and they stop right when she was about to confess to Sueharu.

Sueharu couldn't suppress his rage at how he and his friends were being treated at the talent agency.