He barely felt it when Tiras took only a little of his energy. A vague sort of tug, as normal as gravity itself. It was that subtle.

Su-jin gasped when he felt Tiras fall over the edge, that delightful body of his gripping Su-jin so perfectly. The vampire fell over right after him, growling into the crook of his neck as he thrust once, twice more before his whole body spasmed and he spilled deep into the incubus.