
Because he practically started the series. There is no TG if it weren't for Furuta and the fact that we didn't know it was him till he showed up and started to reveal his true nature many chapters later from the very first TG chapter. He was moving the story forward but not anymore since the story is now being taken over by Kaneki, finally.

I search for furuta via google and i did not get what i want... instead i got a case of brutal murder of a girl named furuta *cries*

It's 1am now.... ╥﹏╥
I want to know why do some of you guys like Furuta? I mean yeah he is a great villain but a s**** character so why?