The story is original but I felt they could make it a little deeper. I would have liked to see more of the main-characters past and the reason for the current situation.
There were some really funny moments and conversations but also a lot of pointless chatter. You see this quite often but sometimes the characters just said each other's names.
No remarks on the animation. It's pretty recent and you can tell.
KissXSis isn't the most funny show I've seen up until now and sometimes the ecchi was too bizarre for me to handle. If you think you can handle it or if you're into this kind of thing, you should watch it. (a friend of mine really liked it)
