18+NEW Aunt, The Unforeseen Guest

The father’s co-worker’s family stayed at the main character Kyungseok’s house for several days when the house was flooded due to the severe flood. That night, his co-worker secretly had a relationship with his wife in Kyungseok’s room, and Kyungseok accidentally saw the scene. Kyungseok gets excited when he sees Yeonsu’s relationship.