I'll post a few pictures at least so it's not just a single request
>>14825805
The only help I can provide is that she is cosplaying as Rem from Re:Zero Best of luck finding more anon.
Pic very related
Sure, this is 习呆呆, a Chinese cosplayer. She has a few porn gifs around but mostly (worthwhile) pictures. You can find most of it on google, but there is a repository of sorts somewhere, which I didn't find yet. I'll com back if I do because most of it is Chinese. Google xidaidai for English sources.