Fallen Nobility manga & manhwa

Art Lapsa has 2 Fallen Nobility series translated into English, with the most recently updated first.

My Sister, That Marquess's Son Is a Spy cover
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My Sister, That Marquess's Son Is a Spy
Japanese
The Flower Bride and the Twilight — The Fallen Noble Lady Devotes Her Pure Blood cover
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The Flower Bride and the Twilight — The Fallen Noble Lady Devotes Her Pure Blood
Japanese