Sōsuke KaiseSōsuke Kaise.

Sōsuke Kaise (海瀬 壮祐, Kaise Sōsuke) is a Japanese manga artist, who is best known for the manga Grenadier. He also created a number of one shot manga prior to that, also published in Kadokawa magazines. Grenadier started with two one-offs in November 2000 and February 2001, but didn't begin regular serialisation until June 2002.