Arknights: A Mission from the Past

(Ensemble cast + the transmigrator is a supporting character + the reincarnator is too + the protagonist is a local with no System + a complicated mix)

The heroic spirits who had slumbered for ten thousand years are gradually awakening. Old enemies and mysterious invaders will gather here. Alone and without help? No. In the name of Heaven, they will assemble: transmigrators, reincarnators, and those chosen by fate. This is their story.