Welcome to Japan, Ms. Elf! (Manga) Vol 7 by Makishima Suzuki

After defeating the demon floor master and bringing Zera and Doula to safety, Kazuhiro, Marie, and Wridra take a break from the ancient labyrinth. Now, they’re off to Aomori!
With their duties discharged, it’s time for some fun—Kazuhiro’s got a new sword, and he can’t wait to try it out. But once he’s in the waking world, he finds himself taking in the sprawling mountain scenery, military history, and hot springs of Aomori, accompanied by the gorgeous Ms. Elf and…a cat?!
Still, there’s more to do in Aomori than just sightseeing. Kazuhiro’s grandfather has tales to share with Marie, and she might end up closer to his grandson than ever before…