Story
Humanity has been brought to the edge of extinction and now exists solely in the last remaining city-state of Flandore, where individual city blocks are housed in separate glass domes. Travel between the domes is possible only via train lines running through glass tunnels. The world outside the domes has become one of eternal darkness and is completely infested with savage lycanthropes.

Within the domes, humanity is divided into the nobility and the commoner classes. Through their blood, members of noble families are able to manifest mana which grants them powerful superhuman abilities enabling them to fight and kill lycanthropes. Melida Angel was born to a noble father and a commoner mother but has never manifested mana and attends an elite academy to hone her skills with mana.