Susumu Katsumata (勝又 進 Katsumata Susumu?, December 27, 1943 - December 3, 2007) was an award winning Japanese mangaka. He debuted in 1966 in the Garo alternative manga magazine, and in 2006, won the 35th Japanese Cartoonists Association Award Grand prize of 500,000 yen for Red Snow. 
He graduated from Tokyo University of Education with a degree in physics. He also studied nuclear physics at its post-graduate school.
Japanese Cartoonists Association Obituary (Japanese)