Something like A Will Eternal. I like the comedy in it, a relaxed plot and the harem tag( I hope it would be good). I have read I Shall Seal the Heavens and Transcending the Nine Heavens. Also the protagonist should be op compared to his peers.
I'd like to tack on that there's a really good manga which goes with it. If that's your style. It's far superior to other cultivation mantras as well
Virtual World: Peerless White Emperor, maybe. Its got cultivation in it, but its not really a focus. It is however, hilarious.