Well, sorry, but ...
No, let me start first by saying that I enjoyed this. The opening was fantastic (seriously, we saw important looking characters fighting each other and then suddenly die to the dozens in the span of 2 minutes). Really liked Satanīs attitude, too.
But, and hereīs the but: Way to ruin an interesting premise. Why did Satan change to a normal human so quickly? Why is he so nice and gives his umbrella away? Why is he not actively looking for a way to regain his powers? This is supposed to be the ultimate evil? Yeah, um, no.
From the summary in the OP, I expected this be about Satan coming to our world, except without his powers. But this guy isnīt Satan, neither in terms of powers NOR attitude. I mean ... wouldnīt it have been hilarious to watch a boy boss around the people around him, telling everyone heīs Satan? Thatīs what I was looking forward to.
Instead, Satan changed into a good guy by switching worlds. sigh
Anyway, will keep watching, itīs good enough.