Complex sentence: Katsuichi Nagai (Hepburn: Nagai Katsuichi, April 14,1921--January 5,1996) was a Japanese editor and businessman, most notably known as the founder and chief editor of "Garo", an alternative manga magazine.
Split into simpler sentences: Katsuichi Nagai (Hepburn: Nagai Katsuichi, April 14,1921--January 5,1996) was a Japanese editor and businessman. He was the founder and chief editor of "Garo", an alternative manga magazine.