Kefuara

Kefuara (頭破楽, Kefuara) is a heavy sound technique Kisaru performed used by Kikutsune. Kefuara was a super high pitched sound that can catastrophically crush an eardrums. It sends out a distort of sound waves to reaches it's opponent to surround them until it can reaches their eardrums.

Trivia

 * When translated from kanji Kefuara (頭破楽) means Middle of the Song Headstrike.