Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 16 - 16-35. Earl Seryuu's Foster Daugther (1)

Falling in love with my imposter sister's fiance wasn't the plan. After finding out that she was exchanged at birth and was the real daughter of the Moore family, Eliana was expecting a turn in her life, but nothing changed except that she lived in a big house and could now eat good food. Her parents still ignored her and everything good was first given to Amber, their imposter daughter.She was twelve when she met him, when he saved her from drowning, and when she found out that he already had a betrothed. It was already known that the eldest son of the Sanders family was betrothed to the eldest daughter of the Moore family since birth. She knew this, and it was only natural that she accepted this, but the more they crossed paths, the more she wanted him and the more she wanted more for herself. Eliana was ready to do anything to achieve all her dark desires, even if it made her a villain.After all, there is a saying that goes “Villians are not born, they are made.”

A broken man who ended his own life finds himself reincarnated into the game he used to play. However, instead of becoming the protagonist or a powerful antagonist, fate places him in the role of a minor villain—a mere stepping stone for the protagonist in the game's first arc.

Living carefree at home is the greatest shortcut—- My house is the world’s greatest magic power spot, that being the case both my house and I were summoned to another world by some guys who were aiming for it. However, I’ve been living in this place for many years and my body is, apparently, abnormally overflowing with magic. Due to some unforeseen circumstances by those guys who summoned me, they quickly ran away. Be that as it may, there are some ill-mannered people who covet the magic leaking out of my house. I won’t give up my house to those people! I’m going to wield my power as I please!

The notorious firearms crime lord Chen Zhang An a.k.a Old Fox was placed under house arrest by the very successor he groomed.