Forbidden Arms: Bloodlust tells the story of a mysterious woman named Mayumi.
She possesses a powerful relic sword that seem to have a special affinity with blood, including hers. To counter the vampiric curse of the sword, she hibernate for 20-50 years every now and then.
She woke up and overslept to 800 years later, the Earth is no more.
A catastrophic event took place and the world is now overrun by monsters and demons.
Mahalai (yes, her) have made a safe haven for the last remaining humans on Earth and promises Mayumi a data Glimpse, which is basically a copy of Earth before it got devastated.
Mayumi now needs to defeat a handful of demons that disrupts Mahalai's "Research" on Earth. The very said research which can empower the powerful celestial relic Glimpse
