not in NA server yet so backside is most likely not accurate as I couldn’t study the sprite animations

This is Liangyu first ascension

seems like a pretty interesting servant from the trivia I read while looking at the wiki for pics where her seiyuu (voice actor/actress) had recorded her lines only a little bit after the game's launch but the servant herself was only officially in the game much later on in one of the lostbelts I’m assuming and after lady reines case files event cuz sima yi is in her interlude

Suggested by IneedIt01