Mariko Shiga (志賀 真理子, Shiga Mariko; December 24, 1969 – November 23, 1989) was a Japanese idol star and voice actress born in Funabashi, Chiba, Japan. She is mostly known for her lead role as the voice of Yumi Hanazono, the main character of the 1980s anime Pastel Yumi, the Magic Idol. Shiga attended and graduated from Funabashi Municipal High School, before enrolling overseas in the University of California, Riverside in 1989. While on a trip to Arizona in November of that same year, Shiga was killed in a car accident near Flagstaff, when she was thrown from the vehicle due to the car rolling, as it swerved to avoid hitting a deer that jumped out in front of the car she was riding in. She died thirty-one days before her 20th birthday.
Source: “Mariko Shiga”, English Wikipedia (CC BY-SA 4.0), excerpt