Oni no Ou to Chigire - Chapter 2 Pg 57

Tokimori, you can tell Katsumoto my name.

huh, okay. This little one is Yato.

Tokimori told Katsumoto Yatos name while thinking he could have done it himself. He didnt know yet that demons were unable to freely give their name to anyone other than their established master.

Thank you for telling me his name.

Katsumoto thanked Tokimori courteously. It may have been right to thank Tokimori since he was the one who told him, however, it was like he was talking to him, but not. It was a strange exchange.

Tokimori exchanged an official contract with Yato when he was eight years old. Yato had been pestering him to hurry, but Tokimori also felt as though he wanted no one other than Yato as his servant demon. His family threw a fit for choosing a small demon, but Katsumoto didnt refuse, and immediately informed the main household of Tokimoris wishes, which was promptly approved. The official contract ceremony was held in the old mansion in Kyoto where the Yase familys ancestor, Hidemori, had once lived. During the middle of the Edo period, the main household expanded into Edo, and presently resided in a large estate in Tokyo, but the old mansion was used during the official contract ritual.