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 eyes, and seeing how the schoolgirls fell for him when he smiled, he seems quite handsome. (Cute ^q^) Given that he can scan or look at human organs without being afraid, he clearly has psychopathic tendencies. He has currently arrived as an international transfer student. He doesn't speak much. Does not appear if Guest chooses to play as Sou.

An ordinary schoolgirl with long red hair. She has red hair and eyes and seems like a normal student, but 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 schoolgirl 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 schoolgirls 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 (with money).

An expert schoolgirl who has mastered both art and engineering. She is a specialist who can personally build 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 schoolgirl 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.