Chiaki was born in Maizuru, Kyoto, on October 26, as the daughter of the chairman of Nippon Sheet Glass.
At the age of three, she started to take piano lessons, and continued for twelve years until she graduated from middle school.
She became a successful singer as the lead vocalist and guitarist of the electronic rock group "Pocket Biscuits", formed as an instant music trio in a popular reality show-like comedy programme hosted by a comedy duo "Utchan Nanchan" in 1995.
In 1998, the trio performed their hit number at the annual New Year's Eve music show Kōhaku Uta Gassen, with a rival music trio "Black Biscuits" featuring Taiwanese actress Vivian Hsu.
Due to her petite, baby-faced childish appearance and high voice, she is often seen as much younger than her actual age.
In addition to being a poisonous tongue, she sometimes talks to senior entertainers, including Ucchan Nanchan, as described below, without hesitation during the performance.
Also, in the 1996 broadcast "Urinari", "Chiaki vs Vivian Cooking Showdown", she couldn't think of a general recipe for the theme of making prepared foods and single dishes.
in the "arrangement" using her favorite sweets, but she was surprised by the referee Teruyoshi Uchimura because she put in an amount that can not be said to be a secret taste.
The name of the mysterious dish that gives off its eerie sweet scent is Chiaki's "fantasy of light and darkness."
After getting married, the couple's co-starring was realized only a few times because of Endo's intention to "separate work and private life".
Tetsuro Degawa, Keiichi Yamamoto (Gokuraku Tombo), and former Fuji TV announcer Shio Chino are said to be friends with dogs and monkeys (He doesn't really hate both).
The actress Kanan Nakahara was a junior high school classmate who kept an exchange diary at that time.