In 2000, on February 9 and 16, the third and fourth singles were released, "Mirror" and "Oasis". They peaked at number nine and number seven, respectively, and both spent six weeks on the charts. His fifth single was released on March 8, "Seki-Ray", which peaked at number seven, charting for six weeks. At the beginning of the year, Gackt was joined by support guitarist and associate producer Chachamaru. For Caparison Guitars, Gackt designed two guitars, named "Marcury" and "Venus", which he occasionally uses in his live performances. On April 26, his first full-length studio album, "Mars", was released. It peaked at number three, spent five weeks on the charts, and was certified gold by RIAJ. The following day Gackt went on a nationwide tour "Mars Sora Kara no Homonsha -Kaisō-", which included 16 concerts, and on July 1, he performed the final concert at Yokohama Arena. On August 30, the sixth single, "Saikai (Story)", was released. It peaked at number seven, spending six weeks on the charts. The seventh single, "Secret Garden", was released on November 16; it reached number ten, and charted for five weeks. On December 16, 2000, Gackt released the first in the series of "Platinum Boxes".