Amazing, its perfection like many others said i wouldnt bother try changing the plot 1 bit because its utterly perfection, but if i were asked if i wanted to change smthing id say its the end of the 1st season it doesnt have enoughof a cliff hanger to make, that makes ur heart pump crazy and make u go for the 2nd season coming up (however other thn tht, the rest of the anime gives more thn enough rezon to want to continue the show even for another season)
