[SquirrelLuvsPnut]

I've only read three volumes so far and I'm a bit confused about something I've read on other sites,

Spoiler for spoiler:

I've read that Tamaki is waiting for his father to die in order to inherit the wonderland, but in the manga Tamaki only refers to him as the old man and never say's anything about being his son. Is it mentioned later or are fans filling in blanks?