Ginka

As part of the Sleepless group, this character is a member of the Sacrifice Unit, sharing an insomniac bond with another Sleepless. They were quickly involved in the events of volume two, where they were overcome by Soubi and were forced to hand over crucial information to Ritsuka. Although they formed a decent partnership, they lacked the necessary abilities to defeat Soubi, suggesting a potential future where they might reach a similar level of power.