Naruto: The Outsider's Resolve - Chapter 8.16 (21)

In a world where every profession has its own system, one's fate is determined by the job they awaken. Reynard Vale was cursed with the weakest profession—Unskilled Laborer—a dead-end path with no future. Mocked, powerless, and abandoned, he saw no way out.But on the night he chose to end it all, the system intervened.[Congratulations! You have awakened the hidden profession: Jobmaster (SSS-Class)!]Now, with the ability to learn, switch, and master any profession, Reynard is no longer bound by limitations. From boxer to librarian, investigator to world leader—every skill, every class, and every power is his to wield.The world that once looked down on him will soon bow before the ultimate professional.

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?

When Astrid transmigrated into the fantasy webnovel she once read, she found herself in the shoes of the story's most hated villainess, a character destined for a tragic end.According to the original plot, the Main Protagonist is hell-bent on killing her at all costs, her cunning step-sister schemes to throw her into the dungeon and usurp the throne at the first opportunity, and even her loyal caretaker has abandoned her.With enemies on all sides and time running out, Astrid realizes her fate is sealed unless she takes matters into her own hands.Determined to survive, Astrid decides to fight back, but as she begins to navigate this world, something feels... off. Why is the Main Protagonist, now showing her unexpected kindness? Why is her step-sister, who should be plotting her downfall, suddenly seeking her favor?••••••It's a yuri harem novel.