The supporting character's harem is very normal - Chapter 489: Akna’s plan

Though it felt a little awkward to be my good brother’s aunt, it was really exciting to find out how handsome and rich his uncle was.

- Description from Novelupdates

Xzavier was super one of the special forces and then transmigrated into the isekai world of magic. It was full of things he couldn't figure out. The magic, elves, orcs, alchemy... However, even in different worlds, humans were always the same. After all, human nature always remains consistent. He encountered a deadly threat, not from a dangerous environment but from his own kind. Fortunately, he had a military system. He could use the weapons he had always been familiar with.The collision of magic and modern weapons, the fierce confrontation between old and new thoughts, the sinister conspiracy and trickery...How should he survive in the strange world?

I’ve reincarnated as the reverse harem game’s villainess, the one and only step-daughter of the Eckart duke family.

All my life, I never once know what it is to be a family. My parents did not care about me and didn't let me start with my siblings.Even when I diagnose with Terminal Illness by the doctor, they did not care about me.The only thing that accompanies me in this lonely hospital bedroom is the game called Second Life. Sadly, all good things must end, and so is Second Life.I decide to stay inside the game until the end and wait for me to release my final breath.However, I'm reincarnated to another life when I open my eyes. I promise to enjoy my Second Life in this world.Now, if only this woman stopped calling me a villain for a second, that would be great.