Requesting someone add the missing bottom part (more of their legs) from the smaller version of this screencap:
https://danbooru.donmai.us/posts/466747It's much smaller though so you'd probably have to further upscale it. Here's a quick upscale of the entire thing in Waifu2x (but it's still much smaller than the full):
https://files.catbox.moe/4iby7d.png 