She has contributed to light novel and children's book covers, illustrations, as well as game package and character design.
She received the Dengeki Game Illustration Gold Award in 1998, and her cover art for the "Ascendance of a Bookworm" earned the Kono Light Novel ga Sugoi!
Shiina found employment at a game company[1] and undertook the character designs for Purikura Daisakusen in 1996.
[1][3] In 2008, Shiina collaborated with fellow artist Haccan on illustrations and package design for The Legend of Heroes: Trails in the Sky from Nihon Falcom.
[6][7][8][9][10][11] Shiina wrote and illustrated Monochrome Myst, a three-volume manga series published through the Dengeki Comics imprint of Kadokawa Shoten.