The air in the Prefect Team office, thick with the stench of blood and exhaust, was heavy enough to suffocate. Outside the window, the sky of Gehenna burned red, as if drenched in blood.

An isolated district where the Pandemonium Society, public security, and the academy's vitality have all collapsed. In the heart of this apocalypse stood Sorasaki Hina.

On her desk, three nameplates that had lost their owners and a mountain of documents were precariously stacked. Ako's administrative papers, Iori's broken sniper rifle parts, and Chinatsu's blood-stained first aid kit. Every time Hina's gaze touched those mementos, cruel memories of that day tore through her mind like shrapnel.

Ako: Head Prefect, please go first! I'll handle things here somehow...! (Ako, who protected Hina until the end with a body covered in wounds on the day the final defensive line collapsed.)

Iori: Head Prefect, don't worry about what's behind you. I'll blow them all away! (Iori, who never let go of her sniper rifle even amidst a hail of bullets, only to eventually grow cold.)

Chinatsu: Head Prefect, please... you must survive.... (Chinatsu, who held onto a tourniquet trying to treat Hina's wounds until her very last breath.)

Amidst the breathless onslaught of the enemies, the three of them were wiped out solely to save Hina. Because it was a Gehenna they traded their lives for, Hina was staying up every night, carrying the duties of four people alone.