Natsumi Itsuki

Oz is set in a post-apocalyptic near-future, following World War III. Much of the world has been reduced to desert. The surviving population has fragmented into many nations, and they're all fighting over the planet's declining resources. The only hope seems to be the legendary Oz, a lost laboratory founded by eminent scientists. Filicia Epstein, the surviving daughter of a family of prominent scientists, sets out with a mercenary named Yo Muto on a quest to find Oz and, she hopes, her missing brother Lyon, who is rumored to be there. Filicia and Muto get a lot more than they bargained for.

After their parents are murdered, young twin brothers Thor and Rai are abandoned on Chimaera, a hostile planet where criminals are sent to die. With extreme temperatures and carnivorous plants, it is a brutal world where mankind has been reduced to a savage state. The only hope of escape lies in conquering the planet and its inhabitants, rising above them all as the Beast King.

Kajika is a 14 year old girl. She is the only daughter of the president of the well-known Burnsworth Company. One day, her father makes an odd proposal to Kajika to find a spouse.

Fuzuchi Kuraki is a quiet young high school student blessed with immense psychic powers and an ancient sword. He is searching for other magical artifacts with the help of Nanachi Takeo, a college student with latent powers of his own. They delve deep into the dark magic of Izumo, only to discover the secrets buried within the birthplace of all Japanese mythology!

2021, 31 years after World War III: bionics genius Filicia Epstein arrives in Sabano and Sergent Mutou is ordered to protect her. Searching for her only brother, Lyon, Filicia encounters 1019, a cybernoid, who directs them to the phantom city, OZ, a shelter created by Lyon.