It's Not A Tragedy, But A Comedy.

Rihito stubbornly rejects the other members and becomes isolated. Mahiro, who has a strong sense of responsibility, tries his best to mediate between them, but to no avail. Memories of a rainy day flash through his mind. A distorted afterimage makes him strongly aware of "that guy." The same scent, emotions that should have been suppressed. Just before the final lesson evaluation test, something strange happens to Rihito...