AgentofSocialMediaChaos's Anime Girl of the Day Season 3 Episode 134 Christina

It's a Viking isekai where the main character Yuuto Suoh gets isekaied to a fantasy world that is similar to Asgard from Norse Mythology however his name in Viking runes is Sutr so he's basically the fire giant that will bring about Ragnarok and destroy that world. There is a lot of fanservice in the series but he never gets any of the waifus in the sack(at least in the 1st season anyway not sure if that will change in season 2)mostly because he's loyal to 1 girl from his own world who gets isekaied into the Viking world too in the final episode of season 1