HP has a villain system but has become a popular character

One ordinary morning, Wen Xiuluo De, who died suddenly from working overtime, traveled to the world of the past. In order to save the regret in his heart, he kept wandering at the junction of light and darkness. In the process, he became more and more involved with this world, gradually becoming the light in the eyes of others, and was also redeemed by them. Wen Xiuluo De: I am alone, if I can change the future of a desperate situation, I am willing to give everything I have. Sirius: The paranoid Black encountered a collar that could restrain him. In order to keep him, Black took the initiative to expose his neck. Lupin: The docile werewolf was willing to see the bright full moon forever...