Ongekisankaku

Ongekisankaku (音撃三角) is a percussion type Ongeki in the shape of a. The instrument has a second mode as a. Th weapon is unique in that the Onisho is not situated on the Ongeki, but on the Onsa. To perform the Sound of Purification, the Ongeki needs to be linked together and then the Oni must hit his Onsa at it to send triangle shaped sound-waves at a target.

Nishiki= Ongekisankaku - Ressetsu (音撃三角・烈節): Nishiki's Ongekisankaku have silver rods with black and gold ends. It was used during the to defeat Hitotsumi and Orochi.