Kousaka has a panic disorder that gets triggered by trains. His breathing becomes unstable, his pulse races, and his mind clutters. He tries to hide this condition from others. One day, Kousaka mistakenly ends up near a station and starts to have an attack. A passerby asks if he's alright. Kousaka brushes him off, grateful he wasn't an acquaintance. With a new semester starting, Kousaka and his colleague greet the new grad students joining their field of study. But, one of the new students is…