Leah Dizon receive moderrate success in America includ cover feature of variou import car magazine. However, her modeling career in the USA gain her much attention and a fanbase overseas, predominantly in Asia. One year after her pictures were posted up on the internet, she already had 2,000,000 hits from search engines. Following the advice of her fans, Dizon sent a demo tape to a talent agency in Japan and in April of 2006, after being accepted, she immediately moved to Tokyo. In October 2006, she released her first photobook titled Petite Amie (Girlfriend in French), which was ranked as the third best selling photobook of that year.
Dizon made her debut as a singer under the record label Victor Entertainment and on February 14, 2007, she released her first CD single and DVD package, Softly (VIZL-216), which peak at number #7 in the Oricon Weekly Chart. At the same time, she also released her second photobook titled Hello! Leah.
On May 30, 2007, Dizon released her second single Koi Shiyō♪, which also peaked at #7 on the Oricon Weekly Chart. The title track is described as a 'grooving, up-tempo dance song' and the single features 2 B-sides: Could you be that one? and Love Story. The title track, Koi Shiyō♪ is being used in a Lotte TV ad while Could you be that one? is being used in a PlayStation 3 Ninja Gaiden Sigma TV ad, with Dizon starring in both commercials.
On May 26, 2007, Dizon presented the best male video award at the MTV Video Music Awards Japan.Her next single entitled L.O.V.E U is scheduled to be released on August 8, 2007