I always LOVE isekai anime that add unique twists like this! Uncle from another World, One Hit Kill Sister, Sasaki and Peeps, and now Welcome to Japan Ms. Elf! I just finished all 12 episodes out and I can say without a doubt this anime is worth the watch! Its a beautiful blend of adventuring in both a fantasy world and the Japanese culture! Our MC is able to traverse the fantasy world while dreaming and at points even bring the fantasy back to his world! How cool is that? So if you are hesitant on watching this anime don't be as it has adventure,comedy, romance and is just overall a fun watch! Not to mention we ACTUALLY get development with the romance in the story so that's AWESOME!!