Oh just wait until 7 days then you will die from either a heartattack, bla bla arrow to the knee bla, PSI, ect. So in conclusion do not freaken mess with a sadako yukkuri unless you have a death wish. Even if you kill it the soul will come after you and you will take it easy one way or another. Other than that bit they just want to be huged and be cared for and help when it can.
Bonus Facts: It's never acts like a shithead unless someone messes with it. It can tell when somebody acidity hurt it from sombody wanting to hurt it. It's waterproof and it's filling is jelly well water. Also it is as smart as a monkey. Rarity ???