The Mysterious Heiress: Researcher In Disguise - Chapter 763 - Fantasy Side Story, ye ze:

A master assassin transmigrates into an interstellar era.

Talent? Unnecessary! Wealth? Doesn’t matter! Brain? Eat it!

Even if one was the greatest of gutter trashes with zero redeemable qualities, as long as they had a System, they are bound to reach the pinnacle of life.

Compass Carburettor, a dirt-poor orphan with absolutely zero f**king qualities managed to reach the peak of the business world by the age of 35, all while relying on his Money-Making System like a blinded barnacle.

But at the peak of his life, he was betrayed by his System.

Suddenly a high school student Subaru Natsuki has been summoned to another world on the way back from the convenience store. With the biggest crisis of his life being summoned to another world and no sign of the one who summoned him things become worse when he is attacked.

“Who knew the key to surviving a deadly island was... well, charm? Guess I’ve got a superpower after all.” – Lucas Carter.When a school field trip takes a disastrous turn, Lucas Carter and his classmates find themselves stranded on a remote, uncharted island. With no rescue in sight and the wilds teeming with danger, survival becomes a brutal challenge. But when Lucas awakens the Harem Survival System, everything changes.The system is as bizarre as it is powerful: for every woman Lucas seduces, he gains extraordinary survival skills and critical resources.From hunting and crafting to strategic foresight, each intimate connection gives him the tools to outwit the island’s many threats.As Lucas grows stronger and more capable, the dynamics among his classmates shift.Friendships turn into alliances, jealousy brews in the shadows, and the boundaries between survival and desire blur.Meanwhile, the island itself hides secrets far more dangerous than its untamed wilderness.