Tenkawa Kohane from Magical Girl Seraphaile, a game by doujin circle Magical Pon Pon.
Oh boy, talk about name inconsistency. Her name when googling the game was either Seraphier, Seraphiere, Seraphielle. Heck, the ingame translation (which was MTL btw) called her civilian name Amagawa Kohane instead of Tenkawa Kohane (I got the furigana from the website that was selling her game.) In the end, I settled with the name that was in the title screen.
Anyway, sorry for the delay, took me a while to decide what character I wanted to do next.