Misaki-chan is so pretty! It looks like there is at least one male character in the picture, but the knee visible on the right side doesn't look like it would belong to the viewer.
I think there are some other pics of Misaki-chan on Komone Ushio's Pixiv and Pixiv Fanbox pages, including a related image derived from this one. I don't have an account for those though, so if someone who does wants to upload the other images, it would be greatly appreciated.