How come half chapter is the same as the one before?

It isn't. Sensei corrected a mistake from the last chapter. They accidentally kept Rin's hair white at the end of last chapter, when he had already sheated the Kuma sword. His hair is supposed to go back to black when the Kuma sword is sheated and his demon heart is sealed in it.

I'm sorry, I like your answer, but it's sheathed :)

Ooops

lol :D