that year, she released her second single "Hishoku no Sora", which was used as the opening theme to the anime series Shakugan no Shana. It became her best-selling single and sold approximately 37,000 copies, peaking at number 11 at the Oricon weekly charts. In March 2006, Kawada and Kotoko released a split single for the OVA adaptation of the game Baldr Force, with Kawada performing the ending theme "Undelete" and Kotoko performing the opening theme "Face of Fact (Resolution ver.)". Four weeks later, Kawada released her debut album Seed. The album reached number 12 in the Oricon weekly charts and charted for five weeks, selling more than 25,000 copies. Later that year, Kawada held her first live tour, where she distributed a pamphlet CD containing the first instance of a song that she both performed and composed by herself, "Carpe Diem". 2007: Savia After her success with "Hishoku no Sora", Kawada released the single "Akai Namida / Beehive" in 2007. The single includes the song "Akai Namida", which was used as an insert song in the Shakugan no Shana movie in May 2007. She also sang , the movie's ending theme, together with Kotoko, Shimamiya, Mell and Kaori Utatsuki under the name Love Planet Five. Three months later, she performed the second ending theme to the series Hayate the Combat Butler, "Get My Way!". Kawada's next single, "Joint", was released on October 31, 2007; the title track is used as the opening theme to the series Shakugan no Shana Second. The single marked the first time her single reached the Top 10 on the Oricon weekly charts as it reached number 9 in its first week; the single eventually sold 37,000 copies and charted for 19 weeks. She performed at her first live concert outside Japan on January 19, 2008, at the KHS Hall in Taiwan. In late March 2008, Kawada released her second album Savia. The album includes "Sense", used as the ending theme of episode 24 of Shakugan no Shana Second, as well as "Akai Namida" and "Get My Way!". The album also includes the song , which was used as the ending theme to the 2008 Japanese theatrical film OneeChan Bara. It peaked at number 15 on the weekly charts and charted for five weeks. 2008–10: Linkage In 2008, Kawada released "PSI-Missing" and "Masterpiece", which were used as opening theme songs to the anime series A Certain