Traveling through time is not scary, what is scary is dying at the beginning.
After nearly being killed by "you know how" several times, Syl was really afraid of his father after time travel. But as the son of the second-generation Dark Lord, the wizarding world would not accept Ciel, so it would be fine if he didn't kill him.
So Ciel planned to survive in the Muggle world, but the Hogwarts admission notice arrived late. He deliberately ignored it, but he didn't expect that Minerva McGonagall, the future principal of Hogwarts, would come to pick him up in person. It seemed that he had to go to school.
Sylvester was also a decent man during his lifetime.
Reading tips:
1. There are plots from movies and original works, so you can choose based on your preference. There are also many other two settings;
2. There are characters to beautify the plot;
3. The protagonist has an ambiguous partner, whether he can succeed or not depends on the development of the plot (not buying stocks, there is only one CP candidate, and there is only a success or failure outcome);
4. In the later stage, there were some Hades, and a pair of background board lalang CP;
5. Magic creates a cub, the protagonist is that cub;
6. Update as the occasion demands.
Purpose: The son of a sinner is not a sinner