Odayaka Kizoku no Kyuuka no Susume.

Lizel arrives in a city that looks similar to his own, but it definitely is not that. He soon came to know that he somehow reached another world. Rather than panicking, he calmly decided to explore this new world. He hires Gil, an expert adventurer from a guild, to stay with him and help him travel safely. While looking for a way back home, he realised that he would not be able to get back there, so he decided to enjoy the vacation there.