This song is the reason I picked up Project Sekai in the first place. I found the all-Vocaloid version on Hitoshizuku x Yama's YouTube channel and instantly loved it. I recently got access to an Android device that I'm able to sideload APKs onto, so I couldn't resist getting the JP client up and running so I could try to FC Mr. Showtime.
Ah but let's not forget the star of the show, Mr. Tsukasa Showtime, troupe leader of Wonderlands x Showtime, and the titular Mr. Showtime.