Hiroko is an 8 foot tall girl. She is a Hachishaku, but she is a strange Hachishaku. While normal Hachishaku like to kidnap children, Hiroko likes to live a normal life like other girls. Although she is 8 feet tall and has no interest in men, she is more interested in women. She often meets Nishida Yumi and she also has a crush on Yumi.