Maou-Jou De Oyasumi is worth a read. The jokes are funny, the art is good, the characters are believable, and the story is fine. Maou-Jou De Oyasumi starts off strong and continued to hold my attention for a good while. That being said, I did also drop it at chapter 69. The problem with this manga comes in around chapter 40ish, where the jokes start becoming stale. The same concepts are starting to be reused and I got bored, which is a huge problem in a comedy manga. And considering the jokes and gags are what the manga is trying to sell you, it's aroundthe time for you to check out and move onto another series. This is a series that suffers from going on far longer than it needs to.

I'd earnestly recommend reading this manga though. Eventually, you're going to hit a point where the same jokes stop being funny and you'll have seen all that this manga has to offer. It's a good read up until that point, so enjoy it while it lasts!