This is by far one of the dorkiest shows I have seen. For the first few episodes, you have absolutely no clue what is going on. And it really doesn't get much better. First of all, the episodes are only 8 minutes long (though in all reality the episodes are only 6 minutes long. 2 minutes of nonsense). Due to this, there is little time for character development. There is no real story until you hit about episode 12. This anime feels like a mixture between Pokemon, Digimon, and Yugioh, yet the episodes are a 3rd shorter than they should be! (Average is 24 mins long.This really got to me.) The only good thing about short episodes is if you are in a time crunch and only have 10 minutes to watch an episode.
The sound is fine, but everything is really dorky. The MC is a dork, and then he fluctuates into a "strong man", and back to a dork. He is constantly in his head, which is hard to make a great story.
It is a decent anime. I'm going to finish the other seasons because I'm a completionist, but I would not recommend this for anyone seeking an OP MC. (This was recommended for me, which is why I say that.) The MC lost all his memories. He remembers somethings when he fights (he actually becomes a completely different character) and then immediately forgets them. There is some fan service that never really gets put into action. The characters hint at naughtiness, but nothing comes from it. (ep 10 or 11. I can't remember which one was the coffee shop.)
I never played the game itself, which can probably account for my enjoyment of the show. Had I played the game first, and then watched the anime, I would probably not have anything good to say about this anime (by going off of reviews I saw around the interwebs).
If you're on the hunt for a dorky show that doesn't make any sense at all, then this is the one for you.