Sanae Hanekoma is the owner of the coffee shop WildKat Cafe on Cat Street, and a great help to Neku, especially during Week Two of the Game. He is later revealed to be the owner of CAT. He seems to know a lot about the Game, although he resides in the Realground.
 Spoiler Alert - Plot details ahead
Revealed in the secret reports, Sanae Hanekoma is a Producer AND Fallen Angel. He became a fallen angel after teaching Sho Minaimato how to create a taboo sigil, which he used to revive himself. The reasons why he chose Sho is explained in Secret Report 11.