[That's alright, Naoto doesn't actually have to do anything but watch and feel anyway. That is kind of the entire point. Especially with Sion holding eye contact. and continuing to slide the fingers deeper into his mouth until his lips hit Naoto's knuckles. And then he slides them out again, most of the way, tongue rolling around and between them, pressing against the sensitive pads of Naoto's fingers.]

[Never looking away.]