lukampire
The Aishi family was cursed to never feel emotion unless they meet contact with their "love", except it isn't really love. Their love is only there for one purpose : To give them emotion, make them feel "human".
Of course, the Aishi family can't just deliberately say that to their children.. they give out hints such as pretending to cut themselves with a knife, then explaining how to clean blood.
Of course, it wasn't their fault. They just wanna feel, but was murder always the solution?