The Heart Of A Parasite: The Online Posting

A Manga series about A young man trying to find his brother's murderer, by becoming one of the guardian, that punishes Daiju, creature that came from the past. And the murderer is suspected to be a high rank Daiju. But things don't turn out as expected- Something about the heart of a parasite. Join him on his journey! Comedy, Slice of life, Romance, Action, Shounen, R-rated, 16+ age.