Well, one of the main plot points is the emergence of new Death Notes and new users. There are different individuals who get their hands on the Death Notes and start using them in various ways, which leads to a complex web of power struggles and moral dilemmas.
The shinobi world's reaction would be complex. At first, there would be disbelief. Many would think it's some kind of new genjutsu or a hoax. But once they realize it's real, the more superstitious ninja would see it as a curse from the gods. The Hidden Sand Village might see it as a potential weapon against their enemies, while the Hidden Mist Village might be more cautious due to their history of bloodshed. The shinobi academies would start teaching about the Death Note as a new and dangerous threat. There would also be a black market for Death Note information, with some trying to sell false ways to protect against it.
The Black Snow Girl's shoes were often called the Flowing Light Boots in the accelerated world because their appearance and function were similar to a pair of bare feet. In novels, these shoes were usually described as being able to emit a flowing light effect and increase the speed of movement and reaction of the character.
Yes, the main character of the novel "I Come from the Heavenly Court", Ye Shiqi, walked to school at first, but then he walked faster and faster. I recommend this urban youth novel,"I Come from the Heavenly Court." The main character, Ye Seventeen, came from the Heavenly Court. At first, he walked to school, but he was a big shot. His speed became faster and faster, and he could often reach his destination in an instant. The plot of this novel is interesting and worth reading. I hope you like this fairy's recommendation. Muah ~😗
Ryuk would probably just be amused. He is a Shinigami who has seen a lot in his existence. Fanfiction is just another strange human creation to him. He might chuckle at some of the more outlandish ideas in the fanfictions, like a character having superpowers beyond the Death Note.
Misa would likely be excited. She is a big fan of Light and the whole 'Kira' concept. In fanfiction, if there are scenarios where she has more power or a closer relationship with Light, she would be all for it. However, she might also get jealous if there are other female characters getting too close to Light in the fanfictions.
L is obviously one of the most important characters. He is a brilliant detective with an eccentric personality. His intelligence and unorthodox methods are key to the story. Near also plays an important role. He is another highly intelligent character who is involved in the events related to the Death Note.