AniMonday Episode 14: The Master of Ragnarok & Blesser of Einherjar

When a high school kid takes a selfie in front of a magic mirror, he is transported to an unknown world in the distant past. Using his incredible solar powered cell phone, whose antenna can cross interdimensional rifts through spacetime in order to pick up phone and internet signal from his home world, the young student becomes a powerful warlord by utilizing advanced technology and military tactics. This great power also gives him great influence over the beautiful ladies of this strange world.