Aisaki Yua from ManHunter Yua vs Mr.Esper, a game by developer JSK Studios
Now in Illustrious. Speaking of jsk, there seems to be a new game from them, I might play it soon enough.
Description
keywords: grey hair, medium breasts, twintails, blue eyes, white shirt, short sleeves, red bow, blue skirt,
recommended to use the score tags if she doesn't look that good