I really like this story, it has so many touching scene. I was really surprised that so many people on this site don't like this anime. I see that many people misunderstood an important thing in the story, which makes the anime change completely. It’s the part where the one of the parts of the series ends, first time in episode 4. Many people believe that the main character, leave the girl his' with to move to the next, but that not what happens. When one part of the anime ends, we go back in time and we see another way the story when. So that means that we get to see different ways that story ends. This is one of the things I really like about this anime. The only thing I have against this anime is the sex scenes. In my opinion they could have let that part out and focus more on the love part.
The animation is great, one of the best I seen so far. I particularly like the way their feces are made, it's easy to see how they feel. It's just a shame, that this good animation is used to make all theses sex scene. I hope they keep this animation quality, in the future.
This is another great thing about this anime; I have never seen an anime with such amazing music. The opening, ending and the background mucis is all fantastic. The voice actors is doing a great job to, I feel their voices fits the characters perfectly.
The characters are great, they really seem like real people to me, in the way they react. Their personalities are very different, which makes it more interesting. I love almost every character; there are only one or two characters I don't like. But it's not like they ruin the hold story, as they do in some other series.
In my opinion it is a very good anime, it is top 10 list with only a few other series above it. But you have to be into genres such as love/romance and drama, or you might find it's boring. It is marked as an 18+ anime, because of the many soft porn scenes. If things like this kind of things, then don’t watch it. But if you like a good love story, with lots of emotions, then this is a much see.