Lost: Ikai no Kemonotachi LOST: Beasts of another world

Synopsis

Yui Kiryuu is a street performer who relies on (and takes pride in) her beauty and dancing skills. In order to save her friend Cecille, she makes a contract with a creature from another world - a Tinas. Her end of the bargain, however, is the thing she treasures the most... (Source: Kindan-no Aku)