Fire (火, ho or 火炎, kaen) is a recurring element in the series, and many recurring spells carries the Fire element. It is one of the principal elements besides Ice, Electricity, Force/Wind, Expel/Holy/Light and Death/Darkness/Curse. Generally, Fire is opposed to the element Ice. In some titles, Fire spells have a chance of inflicting Burn on the targets.
On Strange Journey's power scale, Agidyne has 200 for comparison and Maragidyne has 160. All except for Trisagion are human skills found on various guns and are amplified (power-wise) by the gun's power.
Trisagion (thrice Holy) is a standard hymn of the Orthodox Christian Divine Liturgy.
The Japanese version uses the romanization of Torisu-agion (トリスアギオン) instead of the more common Torisagion (トリサギオン) probably for adhering to the fire spell root of "Agi" and "Agion" in the Megami Tensei series.
Pyriphlegethon was a fire river in underworld of Greek mythology.