MTL - People Are In Konoha, You Call This a Ninja Tool - Chapter 31

One moment I was a grown man—an engineer with a decent job and way too many spreadsheets. The next? I woke up in a kid’s bed, staring at glow-in-the-dark stars on the ceiling… in Malibu.Turns out, I’m Jake Harper now. Yeah, that Jake Harper.“Wait… I had a bitchy mom and a simp dad?”Yeah, the behaviors don’t make sense — just roll with itYeah, the years don’t match — just roll with itpatreon.com/MHJunior(I am not the owner of any show, credits to their respective creators)

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Ruins stretched across the landscape in the apocalypse after the nuclear war.

Galio, valiant reincarnate, is on his last life before he is allowed to take the hand of the beautiful Goddess, Tallia. Four hundred and ninety-nine lives worth of knowledge is given to him as a reward, along with the world he reincarnates to.

A world only known by women, where the concept of man had never existed, and the world is made up of twelve islands holding twelve primary races. These women have never known childbirth, periods, or the leer of a man.

Galio will enter this world filled with wonders that only men would ever dream about, but he has no memories. He will have to make his way, helping some along the way to help grow his Karma System.

Get ready for an R-rated journey of epic proportions and women of all shapes, races, breeds, and sizes! From Angels that moan heavenly melodies to the nine-foot-tall Amazons with weaves between their legs, and so much more!