Shin Megami Tensei: Devil Children (Japanese: ?·???? ???????? Hepburn: Shin Megami Tensei Debiru Chirudoren?) is a spin-off from Atlus' own RPG series Shin Megami Tensei. The Devil Children games are developed by Multimedia Intelligence Transfer and published by Atlus.

Devil Children is a part of the Megami Tensei franchise that is targeted at children. Compared to the other games in the franchise the monster designs are simpler and toned down. The usage of the transfer cable (for handheld versions) is introduced for monster exchange.

White Book
The Tenkai and Makai are changing as the new era of Ragnarok nears. This story is caused by a conspiracy 10 years ago. The forces of Tenkai seek to change the world as they desire and the opposing forces of Makai plant the power of angel and devil in the human children. The two powers reside in two babies born on the same day and in the same hospital and, after 10 years, become friends and attend the same school. But the two had different upbringings, Masaki had a more carefree family while Takaharu had a strict family.

Kuzuha Masaki is the hero of White Book. His fate is intertwined with his friend, a quiet boy named Ougi Takaharu. Masaki's partner is a green Chimera named Cray and Takaharu's partner, Rei, is a Phoenix. This story takes place months after the events in Red and Black.

One day, on the way to school, Masaki is attacked by a devil. Cray jumps in and saves him. He tells Masaki that he is "Makai's chosen Devil Child" and hands a Devil Riser to him. After school Takaharu's little sister Shou who is waiting for Masaki, is put into a "Dark Slumber" by the devil that is hunting the Devil Children. In order to get the antidote for the "Dark Slumber" Masaki decides to venture into the Makai but at the same time Rei appears in front of Takaharu and tells him that he is an Angel Child. Takaharu then ventures by himself to Makai.