Bleach: Shihai no Tsumi: Old Stomping Grounds

 "I've taken the liberty of taking ol' Kurosaki-san off your hands. Don't worry, I'll make sure he doesn't end up dying or anything like that during training. No promises though.

P.S. "If you originally thought this was from some serial killer who slowly kills off each hostage he kidnaps, then you watch way too much television."

This message, written in what looked like blood, was found dripping on the wall of the Kurosaki family kitchen when they all awoke in the morning.