Otohei (音塀, Sound Field/Wall) is the technique where the Otonashi School gets is name as the "perfect song of protection" from. By using Kanakirigoe and compressing the sound waves user forms an impenetrable walls or fields of extreme pressure. Skilled users are able to create multiple walls around them in quick succession. Once is considered a master of this technique when they are able to combine it with the schools signature dolphin ultrasound allowing them to create invisible and silent force fields.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.