Hiroko Ai, a character in the science fiction novel series Mars trilogy
•
Hiroko Hayashi (林 寛子, born 1959), Japanese actress, singer and tarento
Hiroko Shimabukuro (島袋 寛子 Shimabukuro Hiroko, 7 April 1984, Okinawa, Japan), best known mononymously as hiro, is a Japanese singer.
Kaoru Shimamura or Hiroko Takahashi, Japanese voice actress affiliated with 81 Produce
•
Ao Takahashi or Hiroko Takahashi, Japanese voice actress affiliated with Aksent
There have been four character light novels based on the game written by Japanese author Jōji Kamio, with illustrations by Hirokō Buda and Araiguma, published by Softgarage.
There have been three adult character light novels based on the game written by Jōji Kamio and illustrated by Hirokō Buda, published by Softgarage.