Ryoko Kakyoin

Ryoko Kakyoin is a primary character featured in Crazy Diamond's Demonic Heartbreak, a spinoff manga of JoJo's Bizarre Adventure. She is Noriaki Kakyoin's cousin. She spends a few days in Morioh after visiting Noriaki's grave and suddenly stumbles upon a strange book that predicts future events. (Source: JoJo Wiki)