Yuuko Tamaru

Yuuko Tamaru 「田丸裕子」(née Yano 「矢野」) is an old friend of Yuuki Anzai. She grew up with him in the same ONLO orphanage. After graduating from ONLO, she married a human named Makoto Tamaru. They had been living together for awhile, but after accidentally drinking his blood, she was chased down by Division 5 of the Public Safety Department.