C-2726 - 12 years of marriage, an affair during an onsen trip

Her loli-face and the way she reacts so sensitively that she can't help it, combined with her shy smile, made her even more adorable. The long build-up to the actual sex just made me more excited—I was about to burst. If there are other works with her, I'd love to see them. Could you tell me who she is?