Amamiya Tsukito stumbles upon a stunning revelation that he alone holds: the hidden secret of a captivating girl. As he delves deeper, suspicions point to the alluring members of the student council, including his beautiful step-sister, the school's cherished idol, the strict moral leader, and the adorable underclassman. Determined to unravel the mystery, Tsukito infiltrates the council only to discover a perilous truth. 'You're the sole confidant, Tsukito-kun,' they whisper, unveiling their true selves behind closed doors. Will this clandestine bond with these enigmatic yet alluring girls mark the start of a perilous liaison?