Cirno the Ice Fairy
Black★Rock Shooter is a Japanese media franchise based on characters created by illustrator Ryohei Fuke. It revolves around its eponymous character, a mysterious black haired girl with a blazing blue eye. The original illustration inspired a song of the same name by Supercell.
https://www.youtube.com/watch?v=WZiTcevEz2A (Kaito Ver.)