I took my paid leave and went on a trip to a hot spring with my wife. We've been married for two years and have no children. Come to think of it, we've never gone on a trip together since we got married... My wife seemed very happy about it. When we arrived at the inn and were relaxing in our guest room, we heard some kind of noisy, vulgar laughter coming from the hallway... I frowned, wondering what was going on and how noisy it was, when suddenly, a group of vulgar hot spring visitors came into the wrong room...