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From Konpeito Scans:Yulia is reincarnated in a world set before the start of an otome game. She star...

okay so i’ve started this manga but i’ve lost it and cannot remember what it’s called. the main character is a princess, who supposedly cannot bare children,she lives alone in a castle and often goes out as a cover up handmaid and has a best friend called norman. but the mc needed to go down a different path ,therefor she got married to a famous duke who has a child whose in boarding school and is the heir to the duke.
please help if you can with this