Resound (朗々/Rourou lit: "clear-sounding") is a shinki technique that forces the target to speak. It is considered a truth-telling spell and is used to extract information from other shinki. The spell does not work on gods, and an affected shinki can break the spell if their mental fortitude is greater than that of the caster.
- Kazuma uses Resound to interrogate Saku about his intentions and the identity of his master.
- Mikagami uses Resound on Kazuma in order to obtain information about Bishamon's act of high treason.