When a teenage orphan saves a noblewoman from drowning, she's stunned to learn it was a suicide attempt. The noblewoman, Hojo Ran, is betrothed to Tenjo Masato, whose family is embroiled in a bloody succession dispute, and Ran felt that death was preferable to getting caught up in that struggle. Upon hearing this, Ran's rescuer volunteers to take her place. Unfortunately, the groom immediately sees through the fake bride's ruse!

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