"Simple. Become my minion, and I will save you and your little sister."
Jin's eyes widened. "Y-you . . . how do you know she's my–"
"Is that important?" I butted in. "Your life is draining away before your eyes, so you better act fast."
Jin was still hesitating even though his HP was flashing red.
"Hurry deciding. If you die, your little sister will die as well without your protection," I said.
At the mention of his sister, Jin gnashed his teeth and said with a strained voice, "Fine then."
He didn't even ask about the specifics. He really cared about his little sister enough so that he was willing to sell his soul to the devil.
"W-what's this?" Jin panted, eyes beginning to get blurry. He was having a hard time concentrating on the object on my hand.