MTL - Start with Batman - Chapter 368 Frozen King

Raylo, the second son of a Duke, successfully awakens the Daily Intelligence System upon becoming a Pioneer Knight.[1: Within the family's Knight Order, there is a discontented Great Knight named Ed. Ed has been stuck in the position of a squad leader for many years and has not been promoted due to his lack of worldly wisdom. If you promote Ed to Personal Guard Captain, he will realize his ambitions and break through to become an Earth Knight.][2: The Guard Captain of Thunder Dragon City's east gate has hidden his embezzled funds under a water vat in front of a thatched hut next to the east gate. This is a considerable sum of ill-gotten gains.][3: In three days, there will be a blizzard in the Black Stone Mountain Range. A Space Rift will appear along with it, and a 'foreign object' may fall through.][4: In a river valley south of the Black Stone Mountain Range, a flock of Gray-headed Geese resides. The Gray-headed Goose is a Tier One Demon Bird. Its meat is tender and delicious, and its liver is a delicacy favored by nobles.][5: In the eastern part of the Black Stone Territory, there is an abandoned mine. A young Silver Dragon, abandoned by its parents, is hiding here and will spend its fledgling years in this place. This hiding Silver Dragon is a Mutated Silver Dragon. As a Metal Dragon known for its sturdy physique, this little one unexpectedly possesses a talent for Magic that surpasses even Elemental Dragons.]

When an S-class elite assassin-raised captain of a special ops suicide squad comes home from a high-stakes Africa mission, he finds himself offered something that could potentially set him up for life- a curious assignment that he could use to finally exit his days of war and slaughter.

Then placed into a high-school setting, Lin Yi is tasked by the chairman of a top-tier multi-billion company with bodyguard duty for non-other than his own daughter, a certain little Miss of said high-school.

His enemies, once ranging from drug lords, mafia bosses, political figures, and national leaders, are soon replaced with spoiled kids who happen to have rich papas and mamas, and Lin Yi finds his intense expertise and high-threat skillset misused, and very underwhelmed…

But he does get a harem cast as diverse as his old enemies, so Lin Yi decides that, for the sake of messing around with girls as an invincible entity in a down-leveled environment, leaving his bloody and death-filled war days behind is something he’d definitely want to strive for.

- Description from Novelupdates

Seventeen-year-old Grayson has endured a harrowing childhood, leaving him with a dark and twisted philosophy. Driven by this painful doctrine, he imposes his skewed beliefs on everyone and everything around him. His malevolent actions draw the attention of an ancient evil, an entity wrapped in darkness and legend. This being sees in Grayson the potential to carry on its legacy.As the ancient evil begins to mold Grayson for a future drenched in darkness, he finds himself drawn deeper into a web of manipulation and control. Questioning whether he has the strength to defy the fate that has been thrust upon him.Theós, an ancient deity whose origins are lost to time, rules with an iron grip, instilling fear and absolute control over those who dare challenge him.“If it is not within Theós' plan, it cannot be done!”

Jiang Chen, son of the Heavenly Emperor, unexpectedly reincarnated into the body of a despised young noble, thus embarking on the path of the underdog trouncing all commoners. No one has the right to call himself a genius in front of Jiang Chen, as no one has a better understanding of the heavens than the son of the Heavenly Emperor. “Genius? He who adheres to me shall ascend. Those who oppose me can find solace in hell!’