This is really cute!

Basically there is a Gackt impersonator, and Gackt is entirely unenthused. Utaban sets up a monitor in the green room for Gackt to watch the fake's show. The host asks Gackt a few questions (including "What is your favorite food?" -- to which his answer of "Kimch'i" got an unexpected laugh), and the show begins. Gackt says "If the guy's nothing like me, I just might snap on stage". He says that twice, the 2nd time being a little more crazed. Gackt watches the impersonator on the monitor, and sees that the guy is really nothing like him. He calls him chubby, and is horrified at his attempt to play Gackt's music on his little organ. So they go on stage and bust the guy, who is shocked that "the real deal" is standing on stage with him. The audience shouts "They're nothing alike!" Gackt tells the guy he's got balls, and pokes his belly and says "What is this?" The fake asks the real Gackt what he thought of his pianica performance, and Gackt says: "Don't go there."