Nigoru Hitomi de Nani wo Negau - Chapter 123

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

What would happen when someone from our world was suddenly reborn into the world of My Hero Academia with a Gacha System that rewards him with abilities, techniques, and skills from Jujutsu Kaisen? Grand epic fights and crazy shenanigans as he goes through the story to cause chaos and change the world to his liking.

Through a chaotic world rife with war, where demons roamed freely, he found himself in the body of the patriarch of the Luo family, whose life was nearing its end, with one foot already in the grave.Just after arriving, he was about to die?What kind of mortal suffering was this?Just as Luo Changfeng felt bewildered and on the brink of despair, he discovered that he could actually consume the vital energy of the Luo Family members to increase his attributes.A little tap, and his lifespan grew.A little tap, and his cultivation soared.A little tap, and his cultivation technique reached perfection.Thus, Luo Changfeng embarked on a path of empowering his family, continually drawing upon their vitality to strengthen himself.

Born with the fate of a slaughterer, but all he wanted to do was help.