When Keitaro moved into his grandma’s apartment building to cram for a college entrance exam, nobody told him he’d be the new manager of the ladies-only complex! The job has its perks: girls frolicking in the hot springs and lounging in their naughtiest nighties; but, distractions make it tough to study – especially if one of Keitaro’s titillating tenants turns out to be his long lost love!