I'm trying to figure that out myself, but I'm kind of lost about it. I tried looking it up but no version of this phrase turned up any useful results.I guess Kuudere works, but I'm not sure how to communicate the idea of Kuudere in one image.
Update: He’s holding the other persons hand and looking at him. Maybe that will communicate the concept. Maybe i’ll have him almost smiling but not really. I want to make his body language communicate this idea as well if possible.