Keyword Parasite

Men Ke, an office worker and corporate slave, spent the first half of her life so bored that she questioned her existence. In the second half, however, she faces a situation where boredom could literally kill her. Every day, she confronts the threat of death yet still has to go to work. The story revolves around this Earthling heroine and an enthusiastic but somewhat inept alien hero who wants to save her. Together, they must find a way to overcome boredom and live with a smile!

During a field trip, Shio is revealed to be an "E-Gene Holders", a person who wield weapons infused with the spirits of historical figures. The soul of Oda Nobunaga awakens after she tries to rescue a friend.

Part horror movie, part medical detective story, find out what happens when people fall prey to an infection from a parasite, those nasty microscopic creatures found in water, soil and even in the air. Victims' stories are retold, including how doctors and scientists attempt to unravel each case before it's too late. Biologist Dan Riskin, assisted by doctors and experts who witnessed each case, leads the scientific discussion about each parasite.