This girl is a borderline psychopath who actually likes harming tiny people for fun regardless of their gender, age, etc. Despite trying to hide this side of her personality as best as possible not to incur penalties (or worse, be arrested), pretty much everyone in the school (particularly among the micro students) is aware of, or at least suspects, what's going on in her mind.
Because of this, most of the normal-sized students try to avoid her. Her only friends are Alice and another girl who share the same passion for being naughty to smaller people.
She likes torturing tiny people in the most sadistic ways she can think of; she dislikes cute things and insects.
Relationship with normal-sized people
Relationship with micro-sized people
Threatening a micro student into not revealing the truth about the murder of another student.
Every single micro student in the school runs away when she's in sight. She's already killed many of them (mostly by ripping their limbs off or otherwise dismembering them), though she's always escaped punishment because of lack of evidence.
She once met Saya and tried to kill her, though she failed because she was stopped right before throwing her out of a window.
The strips in which (Unnamed) stars as the main character are boldened.