A country without a moon

All families in the country follow the paternal line, but only one imperial family inherits the throne from the mother to daughter. And nobles who want to win the eyes of Empress by raising the son. Prince Seon-yo is thrown into the imperial palace where even love is scourge. she has to choose Who will be the prince's filial piety? And when everything is over, will Seonyo have both power and love?

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