Black Bullet is a Japanese light novel series written by Shiden Kanzaki and illustrated by Saki Ukai, published under ASCII Media Works's Dengeki Bunko imprint. The story takes place during a parasitic epidemic, and follows Rentarō Satomi and Enju Aihara, two Civil Security workers who take missions to protect the Tokyo Area from destruction.

fripSide is a Japanese pop and trance duo originally formed by composer Satoshi Yaginuma (Sat) and singer Nao in February 2002.