Lyrics, artwork, and song were all done by Shu Takumi, the creator of Ghost Trick and Ace Attorney, for Ghost Trick's 3rd anniversary. Credit to tumblr user kixies for the translation.
Original video is:    • ゴースト トリック【祝】3周年記念　オリジナルソング『ボクはミサイル』  
I couldn't find a version with subtitles, and there's no option to add captions to the original vid, so I uploaded this.