A piano player since age 4, Otsuka composes and co-produces her songs. She also writes her own lyrics. Her music ranges from upbeat catchy pop/rock music that can be heard in tracks like "Happy Days" and "Sakuranbo" to touching ballads like "Daisuki da yo." and "Planetarium."

 

 

Otsuka's debut album LOVE PUNCH was released in March 2004 and was a huge success, earning Otsuka nicknames such as "The New Guru of Love." Her second single "Sakuranbo" stayed on the Oricon charts for 85 weeks. Surprisingly, Otsuka's second album, LOVE JAM, was released only 8 months after her first in November 2004. It debuted at #1.

 

 

In other works, Otsuka has acted in the Tokyo Friends drama. She also has a radio show called "Otsuka Ai ai-r Jack" and has appeared in various CMs. Furthermore, Otsuka pens column in two Japanese magazines; "Love Column" in Zipper and "Love World ~ Eye Love Pictures" in B-Pass. "Kimi Iro Omoi", Otsuka's first photobook, was released on March 1st, 2005.

 

 

A talented graphic artist as well, the first pressings of her albums and some singles have included a limited edition picture book illustrated by Otsuka herself. Many of her illustrations can be seen on the Gallery section of her official website.