The Problematic Prince

Is the Royal poisonous mushroom all right?
The prodigal son of the Royal family, once a beloved Prince of Kingdom Lechen, had to put down the crown in exchange for being the principle figure of an unparalleled scandal.
The Royal mushroom, Björn Denyster.
As a property to the Hardy family, she was scammed and destroyed, and thrown to be sold into the marriage market. She was Erna Hardy.
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Today, when she was going to be sold as a wife to either a drunkard or an irredeemable garbage, the problematic prince, Björn Denyster appears to be the savior.
You’re just a token, Miss Erna.
Don’t try to consume the poisonous mushroom.
Or you’ll die.