Reincarnated With A Summoning System - Chapter 146 - 146

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates

Lin En transmigrated into a magical world that resembled medieval Europe but had the power of magic.Here, magic could affect and control basic particles, which was based on scientific theories that served as magic formulas!The wizards, who were actually scientists, were struggling to explore the truth of the world under the chase and blockade of the church. Lin En’s arrival sparked a renaissance of the alternate world…The white phosphorus fire, known as the Flame of Hell, the liquid nitrogen field of extreme cold, and the resonance frequency that kills without a trace… A few years later, the Holy See gathered all countries to the city, known as the legendary wizard, the pioneer of magic Lynn under the gaze of a group of wizards, wrote down the mass energy equation known as the ladder of God by later generations! Lynn looked around the crowd and said nonchalantly. “Mass and energy are interchangeable, and based on this theory, I have developed a powerful forbidden curse… It’s called — “The Big Nuke!”We will re-examine the world from the perspective of magic, where science is magic, and magic is science!

I was once asked a question.“How far would you go for her?”“How much are you willing to suffer just for her ?”“Would you sacrifice yourself for her?”I answered“I will sacrifice myself, but at the same time I won't ”Why? He asked“It's simple ” I replied“I'm willing to die 9999 times just for her but on the 10 thousands time I won't die I'll live with her and make her happy ”“Why not a billion times”“It's simple it's because I love her and she loves me, I will live with her after 9999 deaths she needs me and I need her that's how much I love her”“Then die, die 9999 times just for her and save her from this world”“I intend to ”

– The planet [Earth] has entered the abnormal state [Apocalypse].