Mazinger Otome

After another day of school Seto Magami is walking home with Reito and Koji. However they meet two young women named Necro and Bui Jinga, earlier Mazinger android models who were also created by Juzo Magami and they pick a fight with Seto and Reito, ultimately overpowering them. They leave saying they won't be as merciful as they were. Meanwhile Grace and Shiko encounter their own doppelgangers in the form of Dark G. Dark and Shin Kotetsu who explain their intentions rather than fight. Necro recruits them to form the New Mazinger Army before getting into another brawl with the Mazinger Army. During the battle, Shiko and Shin accidentally fuse together to become Majeeg which became a problem for both sides so they decided to work together. But Majeeg proved to be too powerful for even their combined forces until Seto entered her Astro Mazinger form and after overpowering Majeeg purged the evil from it, freeing Shiko and Shin. Afterwards, both the Mazinger and New Mazinger live on (relatively) good terms.

One of the first Super Robot manga and the one that introduced most of the traits of the Mecha genre. Constructed with the Super-Alloy Z, Mazinger was built by Professor Juzo Kabuto as a weapon against the Mechanical Beasts of the evil Dr. Hell. Koji Kabuto, the grandson of Professor Kabuto, becomes the pilot of Mazinger Z when his grandfather is killed, and battles from there on against Dr. Hell and his allies. This is the first series that introduced the concept of a pilot inside a Mecha, which all series from then on have followed.

The story tells about Hiroshi Shiba, a car racer who is mortally wounded on a laboratory accident, but restored to life by his father, Professor Shiba, a talented scientist/archeologist, who is incidentally investigating the relics of the ancient Yamatai Kingdom. The professor discovers a tiny bronze bell with sorcerous powers, and shortly afterwards he is murdered by the henchmen of Queen Himika, the ruler of the Yamatai (sometimes translated as Jamatai) Kingdom, who wants to seize the ancient bell and its power.