Mana, the spirit of green living things, can be used for both good and evil, and an investigative office exists to keep the destructive power of Mana in check. Ruwen is a Mana Investigator who's been sent to a small town to check out a possible abuse of Mana situation.
Despite some issues (one set of bubbles was completely blank.) and a couple confusing bubbles. This manga was pretty good. The art was good, as were much of the character designs. The layout was excellent and really helped the story along. And the story worked. It might be interesting to see this as more and a simple one shot.