Ginka

Ginka is the female sacrifice of the Sleepless unit. She is partnered with Kinka. Ginka and Kinka were sent to Ritsuka Aoyagi to give him an envelope with a message inside. After Kinka attacked Soubi Agatsuma and got thrown in retaliation, Ginka threw her body over his to protect him from further harm. When Ritsuka asked her what the message they'd given him meant, she explained that Soubi was the one to talk to when it came to 'the teacher'.