[Demon-Mask]

Why did they have Famitsu magazines in game?
Because Famitsu promised them good press if they included Famitsu magazines.
Why did Famitsu promise Konami good press for having the magazines in game?
Because Konami promised to give Famitsu an advertisement for Famitsu's good press.
It's pretty obvious that they were working together to get each other more press and therefore more money.