Cuddle
Sometimes he just wanted to snuggle. Sometimes he just wanted to lay in their bed and sit as close as he could to Kurogane's warm body. He wanted to snuggle as close to him as he could, but he couldn't allow himself to give into his wants.
Sometimes though, Kurogane could understand that and when it was dark and night had taken over them, the ninja would give in and wrap his arms around Fai's thing form. Sometimes he would show an amazing ability to comprehend the whimsical waif of a wizard. The wizard enjoyed the resistant attention but he wanted it to be deeper than a moment of peace between them. He wanted- he yearned for it to mean more. To mean more than a chance encounter of affection.
Fai was afraid of what true affection meant though. He'd never had an opportunity to see what true affection meant outside his head, in the real world. He knew what Ashura-ou had taught him and that was nothing like what Kurogane gave him.
Gentle touches and heavy arms wrapped tightly around his thin form. Ashura-ou had given rough pushes and no arms to hold him. Ashura-ou taught him fear and pain and loathing to be affectionate with somebody.
But sometimes he just wanted to snuggle against his ninja and pretend that everyday was the same. Every day he would be allowed to snuggle into the ninja and allow himself to be a ninja's lover. He was afraid to be that way, but he knew that it was necessary. He wanted to be the perfect lover, what Kurogane deserved, but he couldn't. He just couldn't without killing off the demon who had taught him what affection meant.
Cuddling with Kurogane was nice, though he would never openly admit it. If the ninja knew, then he wouldn't snuggle against him anymore. Not if he knew that Fai liked it for what it was.
Cuddling was good. Sometimes. He could pretend that he knew affection for the gentle thing it truly was.