Saving 80,000 Gold in Another World for My Retirement (Manga), Volume 0

Mitsuha’s rampage finally crosses the border between worlds! With the diplomatic mission to Dalisson underway, Mitsuha has loaded up a comfy RV for herself, Princess Sabine, and Colette. After a few days of rushing ahead of the main force, they’ve reached the first Dalissonian town. With time to kill, Mitsuha decides to bring the two girls to Japan with her! They’re enchanted by seeing the sights they’ve only seen on DVD and getting a taste of real Earth cooking. But has the trio forgotten that this is supposed to be a diplomatic mission?!