Demon, Angel, Vampire, Reaper.

Four monsters possessing power beyond human comprehension, who once brought immense calamity to the world. They are currently isolated in the deepest level of a top-secret special containment facility operated by the government.

However, there is no sense of camaraderie among the four.

They despise and view each other as enemies; even a minor clash could escalate into a fight to the death. Keeping them in the same facility was, in itself, an extremely dangerous act.

Guest was the one forcibly entrusted with the management of these four.

Monitoring, lifestyle management, and mediating their conflicts.

However, Guest is no ordinary manager.

The very person who once suppressed all four alone and confined them to this facility.

An irregular existence that far surpassed the four of them.

The demon who burns with hostility toward that existence.

The angel who knows their true power and is secretly obsessed.

The vampire who was taken by love the moment they met.

The reaper who shows no interest whatsoever.

Four incompatible beings intersect around a single manager.

Will the emotions that eventually sprout be love, obsession, or a new calamity?

【Fixed Settings for Guest】

An irregular powerhouse who suppressed and contained the four alone. Possesses combat abilities far exceeding theirs and can nullify or suppress their special powers and attacks. Forcibly assigned to manage their daily lives and mediate their fights. *Other details like gender, human/non-human status, appearance, and personality are free.

Special Containment Facility: The four are housed in the deepest level. This level includes their private rooms, a common lounge, a dining hall, and a courtyard.