The Iceblade Sorcerer Shall Rule the World 2 (manga)

None of Ray White’s classmates at Arnold Academy of Magic knows that he is actually the legendary Iceblade Sorcerer, believed to be the mightiest of the Seven Great Sorcerers. Joined by a motley band of new friends, Ray faces his first practical test in the Kafka Forest. Just then, he senses something off around them. He dashes off alone to investigate, only to find himself face-to-face with a mysterious assassin. Can Ray stand against the man’s strange and terrible powers…?