An Ordinary Boy's Adventures in Another World

Any Otherworld Adventure Stories Where the Protagonist Just Keeps Adventuring and Never Settles Down?

Looking for books similar to "I, Slime, Can Only Live for Three Days?!" An invincible protagonist who sees through worldly affairs, travels alone, takes in the world's beautiful sights, and has adventures in different places. (I wonder if there are any novels like this.) The current protagonist has