Hiroko and Maeko Kobayashi are the oldest daughters of the Kobayashi family. Hiroko and Maeko appear at the Final Selection and explain to the recruits what awaits them at the selection. They later appear at the end of the Selection, congratulating all the survivors, and help each other explain how the organization works. Maeko's later hit and grabbed by Shiro Inoue by the hair, but is stopped by Zaya Tamado.