Primordial Sin System - Chapter 451 -Backstory

Before going to college, an ordinary high school student went to celebrate and got drunk. When he woke up, he found himself in a completely different world. There was a big sect, the approaching sect entrance examination, a slum where his body’s previous owner lived, and a shared memory about a missing young girl.

When he got tangled in a fight with a few punks in this different world, he fell off a cliff and miraculously found himself still alive, with two more voices ringing inside his head. They were Sword Master and Saber Master. In the company of them, he continued to find out more about this whole new world. He took the sect entrance examination, entered the sect, met a strange man in black, and even participated in a major competition of the sect to have a chance to win over his peers!
In this whole new world, he was born again and got to explore the fantastic martial world!

- Description from Novelupdates

The Solvaris Empire is surrounded by the Godspire — a massive wall a thousand meters high, older than anyone can remember, and deadly to cross. No one knows if it was built to protect the Empire… or to trap it.Reth, a 19-year-old from Earth, finds himself in this strange world. He has no great strength or magic, but a unique Obedience System forces him to serve Princess Asthia, the sharp and ruthless commander of the Serpent Wing.If he disobeys her, he suffers unbearable pain — maybe even death. If he obeys, he gains new powers and skills, growing stronger with every command.While the Empire’s Obedience Sigils keep its people in chains, Reth’s System makes him something different — a weapon, and Asthia’s personal bodyguard.Together, they face plotting nobles, rebel cults dreaming of life beyond the wall, and monsters twisted by corrupted mana.But as Reth’s Corrupted Intent — a cold, unshakable will — grows, so does his resistance to Asthia’s control. Their uneasy trust is tested when they uncover a secret about the Godspire’s true purpose.To protect Asthia and reveal the truth, Reth must decide whether to keep obeying… or risk awakening a horror that could destroy them both.

Reborn Holy Soul Village, nicknamed Aman, the eighteenth generation of ancestors innate soul power zero, awakened third-level green hatchet, no soul ring, no soul skills, fights rely on flat cuts, if you feel uncomfortable, come and cut me.

Also known as “I was born a commoner, a rich family daughter fell in love with me” “This person clearly wastes martial arts…

- Description from novelbuddy

The Adrasia empire on the Vogel continent. There is a battle over the throne of such an empire that possesses powerful military and vast territory.With the successor undecided, the children of the emperor are vying to expand their power. However, there was one prince that everyone says will definitely not become the emperor.The seventh prince, Arnold Lakes Adler. The young man who was inferior to his younger twin brother in every way, the dull prince.Incompetent and lethargic, Arnold wastes everyday just playing around. However, behind the scenes, he is one of the only five SS-Class adventurers called ‘Silver’.Seeing the intensifying battle for the throne he decided “I don’t want to die so let’s have my little brother become the emperor…”This is the tale of absurd secret manoeuvres of the prince who is uninterested in the title of the emperor.