I liked the American. He's great.
It's a shame that the rest of the show took a massive turn for the worse a while back. Everything past episode 3 has been completely retarded. It's beyond obvious that the writers have no idea where the fuck they wanted to take the show.
First it was some sort of mystery with Bubuki, the island, and a fucked up world under Reoko's authoritarian control. Then it was suddenly 1v1 fights with century-long inherited Bubuki, in a battle-royal king of the hill kind of thing. Now it's Bubuki teamfights, complete with Power Rangers style megazord Bubuki combinations with no end-game objective on a magic train.
It's fucking dumb as HELL. At least it picks up whenever Reoko shows up. Her fight against the Bubuki was the highlight of the show so far. I just fear that even Reoko can't make the show good any longer.