What makes Kojin Jugyō by Misono notable?

'Kojin Jugyō' is significant as it introduced Misono's solo career, achieving notable chart success in Japan. The title track, '個人授業,' became a defining moment for her, contributing to her reputation as a solo artist and influencing the J-pop landscape during that period. When 'Kojin Jugyō' was released in 2006, Misono was transitioning from her initial fame as a member of the J-pop duo Mia. This album marked her solo debut, setting the stage for her subsequent ventures in the industry and showcasing her distinct vocal style apart from her earlier work.