Demon Lord Dante

Hordes of demons, once thought entombed forever in the underworld, have now returned to Earth. Evil and corruption begin to seep into our world, as demons seize human hosts. Mankind’s only hope for salvation is to use the demons’ power against them–and only a pure-hearted man like Fudo Akira can do so without losing his humanity. Once little more than a crybaby, Akira now wields the terrible power of a devil, yet holds the innocent soul of a man–Devilman! (Source: Seven Seas Entertainment)

This series is a complete remake of the original Mao Dante, with new designs an a story slightly inspired by the anime of 2002. This time, the story spans longer, the character design is different, and all unanswered questions left when the original series was interrupted, are responded. This time, Mao Dante has a proper ending. The story is divided in four parts: Kami Ryaku Hen, Gen Ma Hen, Mado Hen and Kami Ma Taisen Hen.

September 11, 197x, In the whole Kantou region a magnitude 8-9 violent earthquake occurred. Scholars called it the great destruction of the Showa Era, but the people called it the earthquake from hell! Volcanoes erupted, buildings crumbled, Tokyo became decimated in a single day. The government, after failing to recover the city, abandons Tokyo and moves the capital. The survivors form a society with no laws. In this harsh lawless world emerges Jack, a 10 foot giant who annihilates anyone and anything in his path. The manga details his journey. *Note: This was the serialization in the magazine Weekly Manga Goraku.*

Crossover manga between Maou Dante and Getter Robo G.

From ja.wikipedia: The manga tells the story of Ryo Utsugi, a student who finds himself in the body of an ancient demon known as Dante and sees himself in the middle of a conflict between God and the devils.

An autobiographical manga about the career of Nagai Go and how his most known works were born. How a young Nagai Go, struggling to break out of his typecasting as the go-to guy for gag manga by breaking into the sophisticated world of story manga. *Note: This part of Gekiman! mostly focuses on Devilman.*