MTL - Invincible Exchange System - Chapter 513 Under the first door

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

“What do you mean by I need to steal MILFs to become stronger!?” Waking up in an unfamiliar body of a Prince, Lucian stares in bewilderment as a transparent panel materializes before him, displaying a message that demands — “You need to steal MILFs to become stronger!” His mind races with confusion. What does that even mean?? As the absurdity of his new reality sinks in, he begins to accept the dark possibilities before him. In his previous life, as a master seducer, no beauty had ever escaped his demonic embrace. Now, with this new body, he savors the thrill of his newfound power. Their desires will become my playground, and their most sacred secrets will be mine to exploit. “You’re the Empress? I’ll grant you a divine body if you submit to me.” “Your lover is a once-in-a-thousand-years genius? So what? I’ll make you a prodigy that comes once in a million.” “Your husband is the sect leader of a powerful immortal sect? Irrelevant. I’ll elevate you to become an immortal goddess.” To claim the fate points of the ’Sons of Heaven,’ Lucian will seduce their cherished ones and drain their divine essence.

As disaster was about to strike, a group of survivors transmigrated into a desolated world and were challenged to a game of survival. From terrifying acid rains, to endless natural disasters, the heavens burn while the earth scorches, radiation is rampant, and nobody is spared from the dangers of this hellscape. The only way one survives is by building a shelter and slowly upgrading it in hopes of surviving another day.

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction.

As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!