Rika Shiraki (白木 里香 Shiraki Rika) is a major character featured in the first and second Bible Black games and the anime series Bible Black: La Noche de Walpurgis and Bible Black: New Testament.

She is put under a love spell by Taki Minase that causes her to obsessively fall in love with him even as the boy takes advantage of her. She is later abused by the evil school nurse Reika Kitami and her corrupted followers before she takes revenge on Minase.

Several years later, Shiraki becomes a substitute teacher at her former school. She looks up her former teacher Hiroko Takashiro before again falling victim to Kitami and her loyal follower Kaori Saeki, who brutally torture and her for supposedly spying on them.