Based on the Mahou Tsukai ni Taisetsu na Koto ~Natsu no Sora~ shounen manga by Yamada Norie and illustrated by Yoshizuki Kumichi, serialised in Shounen Ace in 2008.
The story is set in present day Tokyo. Much of the setting is based upon real areas, the more obvious ones being the Shibuya Crossing and Tokyo Tower. The main backdrop of the series where they all reside is in Shimokitazawa, roughly 6 minutes west of Shibuya on the Keio Inokashira Line. In Tokyo is the Bureau of Magic, which employs Mage Labour for certain special requests by everyday people. However, the mages must only use their magic with special permission, and any unlicensed use results in a penalty.