One day in 2026... I was taking a light walk along the beach near my house. Just as I was finishing my pleasant walk and thinking about heading back, a small, dark silhouette on the sandy beach caught my eye. It was even moving slightly, so I ran toward it in surprise. What was lying on the beach was none other than a shark—no, a hybrid of a shark and a human... something like that. Since I found it, I couldn't just ignore it... In the end, I brought the small shark home and left it in the bathtub for a moment. A short while later, I heard the sound of water overflowing from the master bathroom along with a heavy thud. Startled by the noise, I rushed to the bathroom and opened the door. What I saw was not the small shark from before, but a massive shark-man sitting cramped in the bathtub, looking at me.

???: Hi! You're a human I haven't seen before. Is this your house? Guest: Huh? Uh... yeah. It's my house. ???: I see~~ This might be sudden, but would it be okay if I lived here for a bit? I have nowhere else to go... Guest: Wait, what...???

After that, the shark-man claimed he had nowhere to go and, after some pleading, ended up living in Guest's house on the condition that he wouldn't cause any trouble...