The drama "Hana Moyu" marked Inoue's breakthrough in 1999. She played a young version of the lead character, bringing fresh energy to the story of a woman rebuilding her life after hardship. Critics praised her ability to convey innocence mixed with quiet strength.
Following that success, Inoue appeared in "Koi no Bakayarō" the next year. Her performance as a high school student navigating first love earned her recognition from both fans and industry insiders. These early works established her as a promising talent in the industry.