Gekitotsu no Hexennacht - Volume 2, Chapter 11: Rushing Thoughts

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

She was drugged by her ex-boyfriend and had her first night with a mysterious man.

Valens Kosthal was called a genius. A prodigy. Now he has to prove he remains one, even in another world.Valens is the youngest Life Archmagus the Empire has ever seen. His mastery over Resonance allows him to hear the frequencies of the world and correct them, healing even the deepest wounds. Yet he could do so much more, if only it weren't forbidden—the little he can practice must be done away from prying eyes.So when an ancient ritual promises to reveal the truth behind it all, he leaps at the chance. It leaves him alone in an unfamiliar world, deep in a dungeon crawling with rotten skeletons and towering beasts... and a System. One that grants him the secrets of Warmagic as easily as breathing.And Valens no longer needs to hold back....................Posting Schedule: Every day for the 1st month...................What to expect?- An Archmage Isekai story- Unique magic system - Third person limited POV with MC focus- Large scope, and numbers go brr- No harem .....

A boy wakes up with omnitrix as a X-GENE