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A fan-made prequel to the film Osmosis Jones, Heart Burn explores the backstory of the movie's villain, Thrax, through the eyes of Scarlette Cyte, a spoiled brain cell girl who finds herself way in over her head as she pays the price for her poor decisions and learns the harsh reality that is the "kill or be killed" life of a virus. WARNING: NSFW with non-explicit sexual imagery and themes, violence, some scary imagery, and a "Mary Sue" plotline (but executed to the best of our ability!)