Ongekikan

Ongekikan (音撃管)The Ongekikan is Trumpet-Oni Ongeki Weapon. Usually used in its "gun mode" it fires Oniishi which shells out a heavy amount of damage to the enemy. For the finisher, Oni fires charged Oniishi into the Makamou, the Ongekimei along with the mouthpiece completes its "trumpet mode", the Oniishi are then ignited by Sound of Purification through the Ongekikan.

Ibuki
Ongekikan - Reppuu (音撃管・烈風) It is a yellow gun like a trumpet with some Oni's faces on it. The Ongekikan Reppuu is Ibuki's Ongeki Weapon. Usually used in its "gun mode" it fires Oniishi which shells out a heavy amount of damage to the enemy. For his finisher, Ibuki fires charged Oniishi into the Makamou, the Ongekimei Narukaze along with the mouthpiece completes its "trumpet mode", the Oniishi are then ignited by Sound of Purification through the Reppuu.