青の祓魔師
"Upgrade U!", which was initially announced as an A-side but later relegated to B-side status, was written by Kaoru Kami and composed and produced by Jeff Miyahara. The standard CD-only and limited CD+DVD editions also include a remix of "One More Drama". The "Blue Exorcist" edition includes a TV size version of the title track, as well as a remix featuring Rin Okumura's voice actor Nobuhiko Okamoto.