Tears of Blood [Kotoribako]

Kotoribako (Curse Box)

  Kotoribako (curse box or small bird box): According to Japanese legend, it is a device that require a sacrifice of a woman or child in form of flesh and soul in order to grant the user any wish, however the box must remain closed or else the wish will not be granted and the soul of the sacrifice will be freed.

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References:

http://www.hidingfromjapaneseghosts.com/kotoribako.html