Rockin' the World is not listed on NINKI ._.
But on
http://www.spyair.net/index.html , omg they have quite a few promo CM's , with 1 of them , IKE is singing BEAUTIFUL DAYS acapella kyaaaaaaaaa *___*
I don't really have any high hopes for Rockin' the World to do well on Oricon lmao but I just hope their debut album will be good , especially since I preordered it last week :p