Fantasy Bishoujo Juniku Ojisan To Manga

A brief description of the manga Fantasy Bishoujo Juniku Ojisan To:

A boring man together with his beautiful best friend were called to another world by a naked goddess! However, because of their mischief, the goddess of one was turned into… …an incredibly beautiful girl?! To get their body back, they must travel to defeat the Demon King!!!
Let the romantic comedy begin, filled with the madness of the other world!