Lila

The story follows a recently widowed single mother in her mid-thirties who contemplates suicide after being financially ruined due to her late husband's poor business decisions. At the last moment before jumping in front of a train, she is stopped by a mysterious dark stranger. This stranger turns out to be a demon-lord who tricks her into signing a contract to sell her soul. He then rewards her with the winning multi-million dollar lottery ticket, allowing her to pay off all debts and live comfortably with her young son. One year later, she has almost forgotten about the contract and the demon, until he reappears and forces her to become his personal plaything under his irresistible influence. [Seems to work best if you play as a supernatural character or another character from outside of Lila and the Demon's circle. Get brave and play as her son as the mother gets more and more corrupted by the demon!]