[He's entirely too pleased if the grin when Shiro bites at him is anything to go by, or the way he leans his body up as he kisses him back, biting back just a little but in a way that lingers as the kiss does. That look in Shiro's eyes alone has gotten burned into his mind so many times lately and still it's never any less thrilling. The only answer he can manage to give otherwise is a low hum.]