Review of Demon King Daimao

This was my kind of anime, high-school harem with very powerful protagonist, but further the story progress it becomes some sort of matrix bullshit. Unusual terms like 'principle of identity ' is thrown into the mix without any kind of explanation,making the viewer too dumb to comprehend it. And what the hell is the ending ?!? I still don't understand !! YOU SHOULD HAVE WAITED FOR THE SOURCE MATERIAL TO END THE ARC , INSTEAD OF THIS SHITTY ORIGINAL ANIME ENDING WHICH DOES NOT MAKE ANY SENSE!!! There are tons of other good anime like this out there , please skip this one and watch something like highschoolDxD.