Nonsexual acts of intimacy 

♧ :Your muse playing with their hair

                 No, he wasn’t purring.

Demons don’t purr.
                 Well, Kuro does, but that wasn’t the point.

Rin just couldn’t help it, feeling those talented fingers run through his locks like that was far too good— He would even dare to lean into the aria’s touch, nuzzling his hand like a pleased cat. But much like a cat, his intent would turn deadly within seconds if Shima dared to step a foot wrong—- 

                             But for now, he was content to not purr.