MTL - Things from Another World - Chapter 1436 Unsuccessful, it will be Ren!

In her last life, as a cold-blooded assassin, she died without leaving her body behind and was reborn to the time when she was 15 years old with a supernatural ability.

Teaching a lesson to the parents whom are jerks, playing around with the selfish younger sister, slapping the faces of weirdo relatives.

Outstanding and high combat ability, who said that both looks and intelligence can’t be applied to the same person? With that said, she got the attention of a military officer.

“You’re suspected for the crime of murder, hacking into the general server system…… There’s too many crimes to be listed, you need to be apprehended immediately.”

Song Ye raised her eyebrow and got onto the military officer, “According to Young Master Qin, if I want to be cleared off of those crimes, is there any good suggestion for it?”

A certain someone’s eyes darkened and said, “Marry me.”

- Description from Novelupdates

This is a story that follows the courtship between a stone from Hell and a god from Heaven that begins in the underworld and spans for three lifetimes in the mortal realm.

“Hey monster, you're not ready for this blow, but I don't give a shit!!” said Lian as he drew a circle inside another circle in his mind.Then, a few seconds later, a fireball as big as a house hit a monster just over 4 meters tall...It was a waste of resources, but it was damn fun!“BOOM!!!” he said as the fireball reached the monster, covering it entirely.The excitement on his face was palpable as his clothes and hair fluttered from the power generated by the impact.[Accuracy: 97%]“Tsk, it's really hard to achieve 100% accuracy when casting spells... that just means I have to do better!”Meanwhile, the monster and the entire area around him was destroyed. The crater was huge, flames burned the ground, and ash mixed with dust covered the air.---In a world full of Gates, Mages and Knights work together to defend humanity from extinctionLian, a boy from a small town, awakens a very... unique system.Casting spells by drawing strange shapes in his mind had become normal for him by now.Thanks to the system, he had become a Mage, a human capable of using mana to cast spells.Facing monsters from the Gates had become routine. Studying magic was a pastime. After all, he had the System, he didn't need to study classical magic. Or maybe not...

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates