Dark Hour

Info
Dark Hour is an anomaly in which people turn into coffins (They just turn into Statues in SSMB because ✰APS64✰ Doesn't have coffin models since the only known coffin model is in a Hentai addon) it was started due to the Genesis Experiment in SSMB Cannon. a strange tower shows up at Gekkoukan high called the Tartarus and Neptune, Morgana and the rest of S.E.E.S must explore it! the Dark Hour occurs every night at precisely 12:00 AM after Dark Hour the real 12:00 AM happens since Dark Hour is the secret 25th hour of the day (Dr. Mario invented the 25 hour clock after discovering it)

Immunity
The only known people that are immune are:

Persona Wielders (Duh)

S.E.E.S. (Special band and also Persona Wielders)

Neptune (Has Morgana)

Dr. Mario (Immunity gained by the Genesis Experiment)