A young japanese man finds himself in a strange game to recover from his debts.
After a powerful dragon devours him, an average adventurer transforms into a living skeleton and sets out on a mystical journey to regain human form.
The female looking and first autonomous AI named Diva is created for one mission to make everyone happy by singing. Shortly Diva is confronted by an unknown "program" from the future with objective to make Diva join him and destroy AIs.
After being betrayed and run out of her home, the red-haired Princess Yona searches for four legendary dragons to take back her stolen kingdom.
A large group of survivors seek shelter while travelling on a train after their station was attacked by aggressive, undead creatures called Kabane.
Amateur mage Shirou Emiya gets involved in a fight between mages using mythological heroes.