Toshinari and Yurina, who are colleagues, are secretly in a relationship at the company. At first, Yurina was okay with that, but she was never invited to Toshinari's house, and her distrust grew. Arguments increased, and Yurina was treated harshly even at work, so she cut off contact with Toshinari in anger. On Monday, Toshinari was not at the company, and no one could reach him. Worried, Yurina visits Toshinari's house...!?