Long version:
The main idea is good, it has a lot of potential and shock value for other characters not to mention comedy. Story however is only mediocre with author trying to overlap different arcs and put some mystery in there basically keeping the MC in the dark when he could be helping out a lot more if he was only told about it by the chief.
Characters are for the most part just horrible. There are only a few characters that have any other value than to make things ecchi or ridiculous. Both are MC's class mates and have some character development. The rest are just simpleminded with one goal. Like Phyllo, she meets MC, attacks him, he isn't hurt even tho he took the attacks directly and then she wants to marry him the next second.
Art and sound are decent.
Enjoyment... this is another just stupid part of all this. While MC is naive to the point of total absurdity he also makes zero progress there. He calls monsters bugs, he things humans possessed by an evil spirit are just ill, he thinks that a monsters taking over a human is cosplaying... I've seen a lot of stupid characters in the anime genre but this MC is on a whole other level.
While MC's power is far beyond what normal humans can even imagine, it's been a while and he still hasn't realized any of it. His power also changes depending on the situation. One time he's super powerful, like when Phyllo attacked him hard, he didn't defend at all but hadn't moved even a tiny bit, then next time he's a weakling when he saw Riho naked and Phyllo sent him flying like a rocket with one casual attack.
Overall
This is an anime that you can enjoy only if you like flashy stuff and a little of ecchi and harem themes. Anybody that cares about anything else and uses their brain while watching will see that this anime is just crap.
