Reincarnation and the Child Who Knew Too Much

Reborn into the World of Harry Potter with a System and Demons
The protagonist dies from a new virus and is reborn as a baby. He quickly realizes he has landed in the world of Harry Potter, and with the help of a system, begins to train his magical abilities, preparing for future challenges. However, in addition to the familiar threats, he must also face an invasion of demons from another dimension.
The story is filled with humor, reflections on life and death, and a detailed description of the protagonist's magical development.