Shin Violence Jack

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.

The adventures of Zubaban, a rogue samurai who meets some friends along the way, including a African man named Golongo who has a pet lion named Shingo, and the French heroine Jeanne d'Arc, who join forces with him to take down the terrible Shishumaru, which later reveals himself to be a much more powerful enemy they can think of.

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)

Young sports enthusiast, Yamato Hino hears voices calling out to him and during a thunderstorm, he is brought to a parallel world. In this world is the Kingdom Mu, under attack by the evil Dorado of the Empire of Dinosaurs. Yamato was summoned from the prayers of queen Aila Mu to pilot a statue known as the God Mazinger. Joining the Mu army's ranks, Yamato fights against Dorado and his army. (Source: Mazinger Wikia)