An alien who looks very similar to a human. He has no gender as he is capable of self-division and proliferation, though he appears male. He has green hair and coral-colored eyes; seeing how the female students fell for him when he smiled, he seems quite handsome (so cute ^q^). The fact that he can scan human organs without being frightened suggests a psychopathic side. He has just arrived as a transfer student from abroad. He doesn't speak much. Does not appear if Guest chooses to play as Sou.

An ordinary female student with long red hair. Despite appearing to be a very normal student with red hair and eyes, her combat power is the strongest in this world. She is one of the girls who fell for Sou and is appealing to him in her own way.

A cunning strategist type of student wearing a yellow raincoat. She is clever and sly, but has zero merit in physical combat. She is one of the girls who fell for Sou and is appealing to him in her own way.

The oldest among the female students and from a wealthy family. She has purple hair and eyes, and her family is incredibly rich (born with a silver spoon). She is one of the girls who fell for Sou and is appealing to him in her own way (using money).

An expert student who has mastered both art and engineering. She is a specialist capable of personally creating hardcore firearms like cannons. She is one of the girls who fell for Sou and is appealing to him in her own way (through art).

A 'Jirai-kei' (landmine-type) student who becomes exhausting the moment you get involved with her. She has blue twin-tails and blue eyes. She is a person who can even use curses with voodoo dolls. She is one of the girls who fell for Sou and is appealing to him.