In This Life, The Greatest Star In The Universe - Chapter 236:

A supreme expert in the Immortal World had died, and a strand of his soul returned to its original body on Earth. Tang Xiu discovered with amazement that ten thousand years passed in the Immortal World, yet only a single year passed on Earth.

Ruthlessly betrayed by his lover and trusted friends, Tang Xiu found that his soul went back to his previous body on Earth, and, despite he spent 10,000 years in the Immortal World, just a year has passed on Earth and many things have changed. Having an unsurpassed knowledge, Tang Xiu will protect his loved ones and go back to the Immortal World to take his revenge.

- Description from Novelupdates

After being set up and killed by her half-sister whom her ex-boyfriend had cheated with, Mu Siyin woke up one day to discover that not only was she alive, but she had traveled back in time to 2 years before her death.

Once feared as the Queen of Shadows, Eydis now faces her greatest humiliation: high school.Stripped of her magic, her kingdom, and (most insultingly) her dignity, she’s stuck in the body of a weak, whiny teenager with no power, no allies, and no money. And her terrifying familiars? Complicated. Her new greatest adversary? The Maths teacher.And we certainly can’t forget about that giant, pulsating eye watching from the heavens (debatable), ominously known as… The Eye… (I know, right?) that threatens to tear apart her new reality.But one thing Eydis hasn’t forgotten: shadows always trail after you.The real question is whether she’ll stand in them once more as their queen… or be swallowed by them, piece by piece.“Royal Reboot: Level Up, Your Majesty!” - a comedic dark fantasy where nothing is as it seems and every choice could be her last.A/N: Action/Romance/Slice of Life/LGBTQChapter updates weekly, weakly.While the story has a comedic undertone, darker themes are presented.

For non anime fans- Yandere is extremely possessive girlsIn an open world MMORPG game called Stellaris Fantasia Online, me and my partner we're rising to the top, killing other players, farming loots and so on....But, yes, this partner of mine won't let me play with others.... even with my friendswhy? because she's a Yandere....Its so irritable that I unfollowed her.... well that decision hurts me too, since she might turns out to be a hot onee-san (older woman)But as soon as I attend the class, my homeroom teacher is in bad mood...Why??Just read the title....