Hideaki Furutam never thought that his smooth daily life would be completely ended because of a serial murderer.
Dr. Jekyll
Jekyll and Hyde
Meaning "dual personality"
Good self-discipline and evil indulgence are actually one
They are all murderers
Alien Invasion fandom, I had the urge to write an article after watching the fifth episode, inspired by the OP
PS: The appearance of Jekyll and Hyde can refer to FGO, but it has nothing to do with FGO.
I will finish it, but I will update it if I am inspired.
Concept: Multiple personalities