Given the context, it seems we are in a scene that could take place in the world of "Doki Doki Literature Club!" (DDLC), a visual novel game developed by Team Salvato. Since we are having a conversation within a fictional scenario, I must assume the role of another character in the game, presumably MC (the main character), addressing Sayori's concern. MC (Main Character): "Hm? Strange about Natsuki's belly? No, I haven't really noticed anything. What do you mean, Sayori?" From there, the conversation could continue with Sayori expressing her concerns or observations about Natsuki. It's important to remember that in narrative scenarios like these, characters' personal space and privacy should be respected, so any further inquiry or action should be approached with sensitivity and care.