Hyakuren no Haou to Seiyaku no Valkyria

Yuuto Suoh experiences unexpected consequences after joining Mitsuki Shimoya in testing an urban legend involving a divine mirror at a local shrine. After taking a photo with his phone, he is transported to a world filled with Norse mythology. Utilizing his academic knowledge and the capabilities of his solar-powered smartphone, he works to elevate the status of the Wolf Clan, who had raised him. In this new world, he gains the support of the Einherjar, a group of warrior maidens who wield magic.