Hiro

Hiro is a Tsunshun/Tsundere who acts a lot like a Himedere.

Personality
Before revealing mostly everything about herself, she acts like a Himedere, while she is actually a Tsunshun/Tsundere. She is severely sadistic and cruel. She is often amused when one of the students die. But this is just her facade. Her real personality is much nicer.

She is actually a caring and kind girl. Her sadistic behaviour hides her sympathetic behaviour. There are a few moments where Hiro shows her true colors (Satoshi's death, Chiyako's breakdown, etc.)

Hiro is also suffers severe depression and PTSD, due to what happened during her childhood.

Appearance
She has pale skin and short black hair. She has a right bandaged eye with a half smiley face drawn on it with blood. Her eyes are depending on her mood. She wasn't borned with the ability to grow breasts, which is why people mistake her for a guy very often. She has a slit smile. And she wears a black singlet (but it's actually an out grown dress) and denim pants.

Past
Before her birth, she was cursed by the king of demons that she'll be born a demon. Although her parents thought the curse was fake, it turned out to be real. Hiro's mother started to really hate Hiro, while her father really loved her. After a few years, her father started to divorce from her mother. She was donated to a company of sorts called, The 54V10UR. While she was with that company, she was tortured, threathened, and teased. The only person who was nice was a lady named, Maria. Maria decided to run away with Hiro to free her, but was sent to jail for kidnapping a child.