College student Eimi works as a volunteer caregiver at an elderly couple's home. However, there was a room in the house that she absolutely must not open… By the time she noticed the strange presence of someone other than the elderly couple, it was already too late. Eimi is attacked by someone and dragged into the problematic room. The modern darkness 'kodoji' begins here, along with Eimi's increasingly aware abnormal cohabitation under confinement.
