Well... The animation was nice, and at least the series got that they're killers and not misunderstood butterflies who just need love. Other than that, it's pretty pointless. If the series wasn't 10 minutes an episode, I wouldn't of watched the whole thing. So a point for knowing the right running time for this show.
Yui, a girl, is sent to live with, who she thinks is, distant relatives. Turns