Kousaka has a panic disorder that gets triggered by trains. His breathing gets unstable, his pulse races, and his mind gets cluttered. He tries to hide his condition from others. One day, he 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 area of study. But, one of the new students is…