Ai no Wakusei (愛の惑星) is the only solo album by released by Sakurai Atsushi, vocalist for the Japanese rock band Buck-Tick. It was released on June 23, 2004 through Victor Entertainment. The album was packaged in a special long box, featuring a photo book, though it is also now out of print. Sakurai wrote all of the lyrics and sang on the album while the music was composed by a different collaborator on each track. Rather than adhere closely to Buck-Tick's style, Sakurai recruited composers whom come from various musical backgrounds, ranging from the hard industrial rock of Raymond Watts to the upbeat electronica of Xlover.