The official website for the upcoming netflix anime series Devilman: Crybaby, revealed a brand new poster/visual and trailer/preview for the anime. Devilman: Crybaby will air worldwide January 5, 2018.
The anime adaption of author Go Nagai’s Devilman manga was announced near the start of the year March 2017. It also had 2 trailers posted early this year.
Akira Fudo informed by his best friend Ryou Asuka that the demons will revive and reclaim the world from the humans.
As the humans do not stand a chance against the supernatural power of the demons, Ryou suggests fusing with a demon. Akira becomes Devilman, with the power of a demon and the heart of a human.(source)