The Master of Ragnarök & Blesser of Einherjar.

Some urban legends are best left untested! Yuuto Suoh gets more than he bargained for when he joins his childhood friend Mitsuki Shimoya in testing out an urban legend. When he uses his phone to take a picture of himself with the local shrine's divine mirror, he is whisked off into another world – one heavily steeped in the lore of the old Norse…