|This article is about a/an item in Kamen Rider Hibiki.|
Ongekishin (音撃震 Ongekishin, Sound Attack Quake) is a device used by String Oni. If used, it should be attached on Ongekigen to turn it into a guitar, just for their Ongeki Finishers. When not in use, it is usually lodged on the buckle part of their equipment belt.
When String Oni was in the training phase, and still did not have their own Oni's name (referred to as Transformed), the Ongekishin they used were completely white and had no strings, called the Zero Type (零式 Reishiki). It also called as Practice Ongekishin (練習用音撃震 Renshū-yō Ongekishin).
Ongekishin Raigou (音撃震・雷轟 Ongekishin: Raigō, Sound Attack Quake Thunderous Roar): Zanki's original Ongekishin, later used by Todoroki. At first, it has yellow chords (when it is owned by Zanki). After Ongekigen Retsurai is given to Todoroki, it changes to red chords.
Ongekishin Zantetsu (音撃震・斬撤 Ongekishin: Zantetsu, Sound Attack Quake Cutting Withdrawal): Zanki's new Ongekishin. It has yellow chords and red symbol.
Ongekishin Gokuraku (音撃震・極楽 Ongekishin: Gokuraku, Sound Attack Quake Paradise): Sabaki's Ongekishin, attaches to his Ongekigen Enma to turn it into a guitar form for his Ongeki Zan: Enma Sabaki. It has gold chords.
Ongekishin Jigoku (音撃震・地獄 Ongekishin: Jigoku, Sound Attack Quake Hell): Banki's Ongekishin. It has a yellow border with gold chords.
- Shuki's Ongekishin.