I Am Willing to Offer Myself to Daybreak for You

Shortly after Christmas, I. Blanc, the famous pianist of the city of Paga and Countess of Willockel, was murdered in her own piano pavillion one night. The next day, the newspaper headlines and the streets were abuzz with the topic. Who is the murderer who caused all this commotion? (Source: Tencent, translated)

The "Pen of Writing the World" has the power to rewrite the world. No matter how extraordinary the event is, as long as it is written down, it will become a reality. With it, any wish can be fulfilled. If you get this magical pen, what wish would you write down with it? (Source: Bilibili, translated)