Oni no Ou to Chigire - Chapter 5 Pg 92

Yato loved Tokimori. It was love at first sight ever since he saw him as a baby. He wouldnt leave Tokimoris side for even a minute, continuing to protect him by threatening any demon who came near him. Since Yatos form then did nothing but frighten Tokimori, he made his body smaller and smaller through trial and error over the next five years until he was small enough to hide under an eggshell, and looked just the right amount of weak. He was even able to fool the heads of the main household and finally able to become Tokimoris demon servant. Tokimori was admirably worried about Yato being hunted by that demon slayer, but there was no way hed ever lose to someone like that. Yato told him that, but it frustrated him that it didnt seem to relax him.

First, I need to give that demon slayer a piece of my mind.

Yato muttered disgusted as he passed through the apartment wall to stand on the street outside. Tokimori was currently in the bath. Even though he would go in with him when he was child, he lusted after Tokimoris body that matured beautifully, so when he would molest him over and over again with the pretext that it was his reward, he was no longer allowed to enter the bathroom with him. Tokimori would masturbate even though Yato had all this lust he could have been putting to use. His bodily fluids mixing with the warm water was such a waste. Yato wanted to swallow every last drop from him, but Tokimori wouldnt allow that no matter what. He hated this small body.