Summary and Preview
Marnagarm are dangerous creatures that are large in size, feast on humans and live in underground spaces. The Nanashiro Academy is a special school funded by the Toudou family who also funds various military organizations. The academy trains teenagers to fight Marnagarm and eradicate them from the planet.
Magami Taito, a student at Nanashiro, was on a routine mission with his classmates to take care of a single Marnagarm when he is separated from the team. Taito is saved by a mysterious beautiful girl in a school uniform and he is able to make it out alive. He later learns that the girl is Toudou Neun, the same family that owns the academy and she seems to have taken an interest in Taito. But there is something different about her and her unusually high ability to fight the monsters. [vyc]