Lunacy is the seventh studio album by Japanese rock band Luna Sea, released on July 12, 2000.

[2] With only the singles "Gravity" and "Tonight" released, Luna Sea decided to do something unprecedented in the Japanese music industry and held the Premiere of Lunacy 2000 concert.

[3] They then embarked on a sold out two part tour, Brand New Chaos, which included three international shows; two in Hong Kong and one in Taipei.

[3] Two of Lunacy's songs, "Sweetest Coma Again" and "Kiss", feature hip hop disc jockey DJ Krush whom Inoran and Sugizo previously worked with on their solo careers.

[4] Lunacy and the band's other seven major label studio albums, up to Luv, were released on vinyl record for the first time on May 29, 2019.