The Young Master’s Bride - Chapter 10

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.

[Webnovel Spirity Awards 2025 Entry]In a world of magic and machines, Blaine Lionheart had been proclaimed a once-in-a-lifetime genius since he was still just a child.Born to the Legendary Warrior who had earned himself the moniker of 'Supreme Sword', Blaine was seemingly destined for greatness from the moment he first opened his eyes.He awakened to his unique Mana Art at the age of eight and entered the Kingdom's Royal Guard at the age of twelve.However, despite all of this... There was one thing that the boy genius could never do.Protect the people he cared about.No matter how hard he tried... Everyone he cared about would slowly slip through his hands, with him powerless to save them.And now that he's being reassigned to be the princess's bodyguard... Blaine can only hope that history doesn't repeat itself.No... He wouldn't let it!

Jiang Pengji got something called the Court Intrigue Stream System.
System: “Your goal is to become the most prestigious woman in the kingdom (the Queen)!”
Jiang Pengji: “Okay, System. No problem!”
Years later, she met the target by becoming the most prestigious woman (the Empress).
Jiang Pengji: “Well done, no?”

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?