[That is amazing incentive. It's incentive to do more, which, eventually, he does. Arm sliding down between Naoto's back and the bed so he can support Naoto's lower back instead of his shoulder, lifting him a little, palm flat under Naoto's spine, to give Sion more leverage. Speeding up, not rough, but harder and faster, enough to be more stimulating.]

[He can't seem to take his eyes off Naoto's face at all, and his fingers squeeze Naoto's hand, loving and warm and reassuring.]