Elfin (or Echo as she was known in the west) from Jaleco's Rushing Beat Sura/Peacekeepers. Main prompt is "ElfinRB3." For her in-game look "brown hair,long hair,jacket,baseball cap,white shirt,open jacket,denim shorts." You might want to make her jacket red or orange, it's not consistent in depictions.
https://civitai.com/models/1641635/elfinecho-rushing-beat-sura
