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...!
but the only thing we seem to have 
learned is that no one knows anything.
.لكن الشيء الوحيد الذي تعلمناه هو أن لا أحد يعرف أيّ شيء
aber das Einzige, was wir wissen,
ist, dass wir nichts wissen.
pero solo descubrimos
que nadie parece saber nada.
pero solo hemos descubierto
que nadie parece saber nada.
mais tout ce que j’ai appris,
c’est justement que j’ignore tout.
ma sembra che l'unica cosa che
abbiamo scoperto è che nessuno sa niente.
Mas a única coisa que descobrimos
é que não sabemos neca de pitibiribas.
Единственное, что стало ясно, —
это то, что мы ничего не знаем.