The various anime worlds which will hopefully make it in the final game:
Dragon Ball
Yu Yu Hakusho
InuYasha
Naruto Shippuden
Tokyo Mew Mew
Cutie Honey
One piece
Kyo Kara Maoh
Fullmetal Alchemist
Cardcaptor sakura
Naruto
death note
D.N.Angel
Vocaloid
Destiny Island
Traverse Town
Hollow bastion
Twilight town
The world that never was

I'm currently open for ideas of more worlds! if you know of any animes that should be in here then send me a link about it via guestbook.