Tate no Yuusha Opening 1-2 Reaction Mashup 盾の勇者の成り上がり OP 1-2

盾の勇者の成り上がりOpening 1 - 2 Reaction Mashup
Iwatani Noafumi, a young university student and otaku is suddenly transported to another world after reading a fantasy book that he found by chance. He, along with three other people, has been invoked as one of the Legendary Heroes who will save the world from the "Waves of Calamity".