[Matsumoto Izumi] Toki no Itazura?

A chronically late student who endures endless scoldings from the strict class rep suddenly finds time itself frozen at his command, turning every girl in school into his helpless plaything. What begins as doodling on a bespectacled classmate's face quickly escalates into tugging down panties and spreading Eriko's bare cheeks, savoring bodies that can neither resist nor react. Then comes his ultimate prize: the untouchable beauty the whole school calls the 'Iron Maiden,' whose most secret place no man has ever been allowed to see.