I Ended Up Raising the Seed of Evil

Reincarnated as a character destined to be killed by the final villain, she attempts to alter her fate by raising the future antagonist herself. However, her well-intentioned plan takes a dark turn when her once-innocent ward becomes dangerously possessive, refusing to let her leave his side. Instead of saving herself, she may have nurtured an even greater threat—or awakened a god of obsession.