Tomoyuki Tanaka
"Sekai", released months before the album, was Chara's first release under Universal. It was used in commercials for the NTT docomo service "NEC N702is" cellphone. The second single, "Crazy for You", was created in collaboration with Shibuya-kei DJ Tomoyuki Tanaka (i.e. "Fantastic Plastic Machine") and The Brilliant Green guitarist Ryo Matsui. Tanaka produced the song, while Matsui wrote the music.