Majeh, Ruler of the Land Recommendations
Both of the protagonist start out kind of strong but they really have a lot of potential to get insanely strong. Both of them also has a some kind of mysterious background that nones really knows of. They are also both casted in the old murim where the weak obey the strong. And both of them also have very, very similar humor. The art is also quite similar with that kind of old stylish look.
If you like a strong protagonist with a good story and great humor then I recommend it.