Just moved in, Iroha found herself ambushed at the front door one day by her landlord, Tomioka, who overpowered her before she could resist. With her husband away on a business trip, the house was empty. Tomioka sadistically assaulted Iroha, using violence to break her will and force her into submission. As the ordeal continued, Iroha's mind gradually shifted, awakening to new, unexpected feelings within her.