This song is ending song of Kara no kyoukai 3 - Tsuukaku Zanryuu
sang by Kalafina, a vocal group created by Japanese composer "Yuki Kajiura"
I think from all of Kara no kyoukai episode, Kara no Kyoukai 3 one of the most epic ep.. it's a crazy and insane episode :)
I love this song, watch below to listen it
KALAFINA - ARIA
