Fics like A Spark in the Dark

[AU: Master's Sun x Heirs crossover] Tae Gong Shil and CEO Joo Joong Won team up to uncover the mysterious CEO Choi Young Do's secrets. They find more than they bargained for: a ghost, a cafe, and a broken relationship. Will they be able to repair ruined hearts, send a ghost to the light, and save Joong Won's precious investments?

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