mafia kajita
Mafia Kajita (real name: Kajita Ryuuki) is a freelance writer who has been involved in many game, anime, and manga projects. He is also noted for his distinct appearance - bald head, sunglasses, mustache, and leather jacket. Kajita is friends with many seiyuu, notably Sugita Tomokazu with whom he has a radio show.
SP Tanaka is an alternate personality of his.
He is co-creator of the Goho Mafia! Kajita-kun manga by providing its material.