About Shiho Niiyama
Shiho Niiyama (新山 志保, Niiyama Shiho; March 21, 1970 – February 7, 2000) was a Japanese voice actress from Matsuyama, Ehime, affiliated with Aoni Production at the time of her death. Niiyama was most known for her roles as Kou Seiya/Sailor Star Fighter in the Pretty Soldier Sailor Moon series, Risa Kanzaki in Neighborhood Story, Suou Takamura in Clamp School Detectives, and Deedlit in Record of Lodoss War: Chronicles of the Heroic Knight. She was also involved in the voice actor group Virgo, who were the voice actresses in the anime and game Ojōsama Sōsamō. Niiyama was diagnosed with leukemia in 1998 and later underwent a bone marrow transplant on February 7, 2000. At approximately 6:23 A.M., Niiyama suffered a bout of internal bleeding in her lung and died as a result of complications from leukemia. Niiyama was 29 years old at the time of her death. Her final performance was in the TV series Record of Lodoss War: Chronicles of the Heroic Knight as the voice of Deedlit.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.