I watched this anime hoping it would be good but it turned out to be one of my favourites . I am a person who craves sci-fi anime and i will say this to you after watching many sci-fi animes that this is one of the bests , every character is very important and you gradually from a connection with every character and they make many mistakes which makes them real the anime revolves around a self proclaimed mad scientist named Okabane Rintaro, Daru ,Mayuri and many more friends and foes they make on their way If you are somebody who is wondering to start this anime i suggest you really should if you love sci-fi anime, this anime is vert tragic and your tear glands will run out of tears but it has many funny instances which makes this anime really good and genuine. I gave this a 9 out of 9 because there is no much background information about the characters.