Typhoon Com - Kanna Nozaki's Erotic Troubles - Case Closed with sex Final (eng) - Adult Sex Game

As the Student Council President, Kanna Nozaki was conducting her duty of surveilling Yariman High School.
One day, Kanna was notified of theft. A female student had her underwear stolen.
Kanna immediately formed a task force to further investigate the case.

Kanna usually mugs or performs erotic attacks to collect hints.
Kanna thereby identifies the criminal. The criminal's peculiar motivation was...!?