In order to prove that he is a true hero who has been summoned by a goddess, Schwartz, a high school student who is from Japan just like Tachibana and Jinguuji, has takes on a mission to defeat the living armor which has been attacking tradesmen near the Mercs territory. The living armor only targets magic items, and tries to take Schwartz's holy sword, Gram, and Tachibana's tiara, but...!
I thought the Demon Lord was 
just a children's story.
.ظننت أن ملك الشياطين مجرد قصة أطفال
Ich dacht ja eigentlich, der König der
Dämonen wär nur eine Legende,
Creía que el rey de los demonios
era un cuento infantil.
Creía que el rey de los demonios
era un cuento infantil.
Moi qui pensais que le Roi Démon
n’était qu’une légende,
Pensavo che quella del Re Demone
fosse solo una storiella per bambini.
Pensei que fosse uma lenda
essa coisa de rei do mal...
А я думал, что это сказки были
про Владыку Тьмы…