SHOUNEN MAHOUSHI

Shounen Mahoushi summary:

A battle has broken out among rival sorcerers.
The most nefarious group, the Necromancers, is killing young girls in Hong Kong to read the future in their entrails. Carno, a human youth raised by Aeromancers in a different dimension, is summoned back to his homeworld to join in the battle.
Does Carno have what it takes to survive in a world of political alliances and emotional entanglements?
(from mangaupdates)

A battle has broken out among rival sorcerers.The most nefarious group, the Necromancers, is killing young girls in Hong Kong to read the future in their entrails. Carno, a human youth raised by Aeromancers in a different dimension, is summoned back