Fics like A King of Little Things

Prince Law is sent to Raftel Kingdom for an arranged marriage, planning to kill his future husband and claim the throne for himself. Instead, he discovers that King Luffy has no interest in ruling and happily hands the responsibility over. While Luffy spends his time trying to save the kingdom's crops through years of careful beetle breeding, Law takes charge, rooting out corruption and restoring order. But when their enemies strike, Law learns there's far more to his strange, gentle husband than anyone ever realized.

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