"Hmmph! If he returned to the city, I would know it! Even if he hides in those broken houses with the poor, my blood butterfly will still be able to sense him!"
The boy bowed. "True enough. Perhaps this blood butterfly is faulty. Let me condense a new one for you, and we can try again."
The black-robed man did not speak. Apparently, he had agreed with him. The teenager bit his mouth slightly. He retrieved a sharp long needle out of nowhere. There was empty space inside the long needle, and it shone strangely under the moonlight.
He pinched a spell and inserted the long needle into his heart. After that, he slowly twisted and twirled so that the long needle entered into the heart, inch by inch. A few seconds later, he stopped, and there was blood coming out from the long needle. The blood was dense and glowed in gold. It dripped in the palm of the teenager and spun like blood beads.