Hide Osako is the Ultimate Theorist. A glacial lass who is leery of others and has the tendency to make curt remarks when she is aggravated. Hide is confident in her talent; however, she will give others the opportunity to challenge her hypotheses, letting what happens next speak for itself. 

Hide’s mistrust towards the other students often causes her to become a target of suspicion herself. She gazes at people from a distance, and is branded a stalker because of it.