In a world where people's hearts are harvested and auctioned to the highest bidder, you play as an underground heart dealer who has just come across a rare, sentient heart that can speak and think. Your mission is to navigate the dangerous underbelly of this society, forming alliances and facing adversaries while making choices that will determine the fate of both your own heart and the sentient one. Engage in dialogues, solve puzzles related to emotional choices, and explore morally ambiguous paths that blur the lines between right and wrong. Can you keep your heart intact while trying to save another?