It's when Harvestman finally fills him that the fangs come down, not with a cry or a gasp, but just a soft click between panting breaths that neither one of them really need. They nick Arashi's own tongue in that intoxicating kiss and the strange, sharp taste of blood and venom mixes between them. Arashi's lips are red again, when Harvestman draws back.

Every slow thrust fucks a breathless little groan out of him, and he holds Harvestman's gaze, flushed but still shameless, sliding both hands up to weave his fingers at the back of Harvestman's neck. It's what he wanted, exactly what he wanted, except now he wants more.

"Harder," he moans, fingernails breaking skin, one hand dropping to Harvestman's ass to squeeze and encourage him while Arashi gasps at his jaw. "Yes, fuck me, yes."