National Destiny Arena: Rise of the Demon God

The world's gods have been forgotten and nobody alive remembers their names. Ethan Hayes awakens with an SSS-rank Demonkin affinity, which is rare enough on its own, and with memories of the old Huaxia deities that no one else carries. The affinity marks him as something to be watched, and the memories make him sound like a liar, so most people around him treat his claims as invention. He starts calling the lost gods back by name. Invasions come at the settlements from several directions at once and he breaks them with what he has summoned. Naming a god correctly turns out to be a weapon anyone could use, and the fighting that follows turns into a contest over who holds the true names.