Shin Megami Tensei: Devil Children - Light & Dark (TV Series, 52 episodes, AniDB)

Requested on Sept. 25, 2021, 7:27 p.m.

One day, when Akira and Rena chants an incantation as a joke, time on Earth suddenly stops and they are transported to the world of Valhara. In the past, humans and Devils got along and lived together. Devils were even used by the empire army to overcome any dangers in the peaceful world of Valhara. It was there that Akira and Jin awakened the power of the Devil Children and also how they met Rand and Gail as their partners. So that they can return Valhara to its once peaceful state and to return to their own world, they must first set off to gather the shattered pieces of the Key of Time. And so, their journey begins as they meet a mysterious girl named Ami in Valhara. During their journey, they encounter countless Devils who all have one purpose. And that, was to stop them. Strong ones, intelligent ones, cute ones... they all keep appearing out of nowhere! Source: AnimeNfo