People who voted 1/10 or 2/10 are people who watched one or two episodes and stopped. This anime is really really good. They kept the story simplified , short and the characters are awesome. I really enjoyed the anime and it gave a lot of inspiration for my life. The protagonist's character is one of the best ever.
This is undoubtedly the best anime ever. The best part of the anime is that there are no loop holes. Everything makes sense in the end. Another amazing thing about the anime is that there are no annoying characters who ruin the fun of the anime. Every character is good in his own way. As a reader of the manga, I can guarantee that the ending is EPIC! This anime constantly improves reaching it's Pinnacle at it's ending. This deserves number one and I'm sure the ratings will improve.