Here’s the cover for the most recent Japanese translation, Heartless.
This is not the manga but the book translated into Japanese.
Book News:
Vaginal Fantasy talks a little about Soulless
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Heartless: Parasol Protectorate Book 4
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Lady Alexia Maccon, soulless, is at it again, only this time the trouble is not her fault. When a mad ghost threatens the queen, Alexia is on the case, following a trail that leads her deep into her husband’s past.