Oh... I don't know.
All my favorites songs are in the different albums and i love ALL naitomea's albums \o/
I agree that Killer Show is so catchy. Especially with songs : DIRTY, Raison d'être, Pandora, TrickSTAR, Gianizm Hachi, ... XD The latest album, Majestical Parade, is too good !
Arf, it's a hard choice ;__;