Seija Musou, better known as the Great Cleric for its English release (which I haven't read), is an interesting story about an isekai reincarnator who becomes a cleric purely because he wants to die of old age this time around.  

In a way, Luciel, the protagonist, is fairly similar to Satou, the protagonist of Death March, in that his goal isn't to save the world but he ends up doing it anyway.  The biggest difference is that Luciel isn't all-powerful (well, at least not until VERY late in the story) but rather just an incredibly hard worker who puts his all into his primary goals of surviving (which translates into getting skilled and strong enough to survive any situation) and growing old with his family. 

Unlike many isekai stories, this one isn't a harem, though there are a lot of hints that it could go that way in an instant.  There is only the mildest of romance (a really slow-burn romance that starts near the beginning and only comes to its natural conclusion at the very end of the story).  There is truly a ton of combat, training montages (if there was music and video), and Luciel being driven up the wall by events conspiring to show him he 'still isn't strong enough to survive' and shove him into saving the world.

A lot of the story's humor comes from Luciel's companions going behind his back to do things that are for his benefit but are particularly displeasing or unpleasant for him.  There are also a lot of moments where Luciel's common sense (which is greatly divergent from most of those around him) stuns those around him.