I started reading without knowing anything at all and i thought the plot at the beginning is really good, but i can't say the same about the development after that. In the beginning, the yokai cat became the boy, to 1° take care of his little sister until she became independent, 2° avenge the boy's death, become the only heir and pay for the treatment of his little sister; after the second chapter you sniff the generic potato shounen from afar. I droped, but i recommend it for the initial plot~