Death March to the Parallel World Rhapsody 4 (Light novel) - Hiro Ainana

What's a journey without a few bumps in the road? All Satou wants is a leisurely vacation from the real world, but this time, his travels lead his party into the famously dangerous Muno Barony. Satou may be level 310, but even he has his hands full with giants, four-headed monsters, and haunted fortresses! He still finds time to help out the locals along the way, though, and when one of those people in need is Baron Muno's beautiful daughter, he may be the only one who can stop a terrible conspiracy...