Fei Zui Lau

This character is a lightstone who shares a bond with Ruri, having fled with Kijima from Kenmi. She plays a crucial role in Kijima's survival by utilizing her blood to develop necessary vaccines, addressing his power imbalances. A significant event in her life involves her brother, Zero, who experienced a loss of control; she and Kijima managed to save him after he was tragically killed by Kenmi.