I don't mind him getting stronger, but I don't want it to be through some cheap ass way like he made a wish or some goddess gave him some OP ability, I would much rather him getting stronger through the dungeons, the normal hard way, and go up the ranks, i like that he's level 2 now, and then idk in one chapter he'll go in the daungeon with his wife but they'll get seperated and he'll have to fight by himself, and when she finally finds him, he'll be all bloody and hurt collapsed next to corpses of low level monsters, then she'll run to him and she'll notice his level jump from 2 to 5 , etc...
Unless ofc this manga get axed and the author needs to finish it in 5 more chapters, then I'll much rather a time skip of him getting stronger alone, than some OP cheat ability .