Oyama Youko

Age: 15

Species: Revenant

Ratio of IQ (in points) to waist measurement (in centimeters): 1:1

The star pupil of the class, though really it's not that hard when nobody else is trying. Poor Youko is doomed to a life of rolling her eyes at others' actions. Like all revenants, she has a drive to complete a task she left unfinished in life, which in her case means she's a compulsive eater. She weighs fifty grams, which is pretty damn chubby for an ectoplasmic entity.