Birthday: January 18
Height: 183 cm
Weight: 75 kg
Affiliations: Keikain House

Koremitsu Keikain is the older brother of the 13th head of the Keikain House, Hidemoto. Though he studied and trained for 28 years as the direct descendant of the family, he was ultimately passed over as head in favor of his younger brother. He primarily acts as a guard for Youhime against the various youkai seeking to eat her liver and gain power.