Complex sentence: He also works as a freelance writer for books, magazines, newspapers, and comics with his friends such as Akira Toriyama (Dragon Ball, Dr. Slump), and Yuji Horii (Dragon Quest series).
Split into simpler sentences: He also works as a freelance writer for books, magazines, newspapers, and comics. He has co-authored with Akira Toriyama (Dragon Ball, Dr. Slump), and Yuji Horii (Dragon Quest series).