I'm a Pastor, what the hell is an Acute Gastroenteritis Outbreak Spell?! - Chapter 435 - 343: The Goddess of Life? Appears in Holy Light._3

Despite being betrayed by her boyfriend, the neglected heiress Lariette Elsher is still forced to marry him – all because her family wants to appease the fake daughter. The one she was switched at birth with.Screw this! She's done playing nice!Devasted and enraged, Lariette seeks her friend's help – to pick the best man at her butler cafe to be her contracted husband.Enter Ruediger Alvord, infamously known as the poor outcast of the Alvord family, the Elsher's family nemesis. He proposes to be Lariette's partner-in-crime, to wreak havoc in both families.While Lariette is busy getting her revenge, she fails to notice her contracted husband's strange behavior. She also fails to recognize him from a distant past.Before>Ruediger: I have nothing much on my name but, I can be a good househusband.Lariette: It's okay. I can feed you.After>Ruediger: Do you want that house? It's nothing much. Only one billion.Lariette: Aren't you just... a househusband?Since when is her husband a billionaire?!

As a true over-bearing president scum gong, when Xie He for the Nth time rejected his admirer, he heard a sentence in his head: “Congratulations on achieving the “rejects 100 hosts” accomplishment; as an award you will soon bind to the “Scum Gong and Cheap Shou” system, entering other worlds to complete capture missions.

A data loving young man from Earth has an accident which transports him to a dark land filled with terrifying creatures and magical powers. Fortunately for him, he has a Biological Assistance Chip to ease his path. However, things in this bizarre and strange world are not always as they seem, and, though it is a tremendous asset, the chip doesn’t always work as expected. With all of the crazy creatures and magical mayhem around him, one can only wonder what the future holds for this young man…

- Description from novelupdates

You thought being reincarnated as an extra-side character was bad? Imagine being thrown into the body of a villain who is disowned by his own family and discarded by the author.