Start with Batman

Ancient existences wake up in the abyss, demons whisper in people’s ears, unknown horrors erode the spirit, and madness breeds in the darkness of people’s hearts. But it is not only darkness that descends on this world. There are heavily armed dark knights walking in the dark to judge crimes; tight-fitting supernatural beings wandering between buildings to act as friendly neighbors; The impossible god on earth, the “S” symbolizing hope shines like the sun on his chest… No one could have imagined that behind all of them, there was just a player sitting in front of a computer screen holding a keyboard and punching hard. - Description from novelcodex.org