MTL - Harue Kagetsu - Chapter 20

When a fantasy kingdom needs heroes, they skip the high schoolers and summon hardened Delta Force operators.Lieutenant Cole Mercer and his team are no strangers to sacrifice. After all, what are four men compared to millions of lives saved from a nuclear disaster? But as they make their last stand against insurgents, they’re unexpectedly pulled into another world—one on the brink of a demonic incursion.Thrust into Tenria's realm of magic and steam engines, Cole discovers a power beyond anything he'd imagined: magic—a way to finally win without sacrifice, a power fantasy made real by ancient mana and perfected by modern science.But his new world might not be so different from the old one, and the stakes remain the same: there are people who depend on him more than ever; people he might not be able to save. Cole and his team are but men, facing unimaginable odds. Even so, they may yet prove history's truth: that, at their core, the greatest heroes are always just human.

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

In a world where countless web novel universes collide, where soldier kings, mercenary overlords, god-tier tycoons, and even demons wage war against each other—where protagonists rise, seduce breathtaking heroines, seize endless opportunities, and battle for supremacy—there is one man who can suppress them all.A man who has finally crossed into another world.When he opened his eyes, he found himself in the body of a young man named Veil Lancaster.“A villain destined to be beaten to a pulp by the protagonist? Am I really just a side character?” Veil muttered to himself.But why should he accept that fate? His father held absolute power, his mother was a legendary business tycoon—what made the so-called protagonist superior to him?Fortunately, at that moment, he successfully awakened the Villain System.One day in the future—“Veil! You crippled me, stole my opportunities, and even took my woman! You damn villain! You’ll suffer divine retribution for this!”A protagonist roared in fury, coughing up a mouthful of blood.Veil smiled gently and said, “I didn’t do anything… This was simply your fate.”“A pawn has only one destiny—to be placed exactly where I want it.”Remember this.I, Veil Lancaster, only wish to be a charming and sinister villain.

Once upon a time, a boy was referred to as a “War Hero.”

In another world called Aletia, the boy who had saved the Lost Kingdom, conquered their neighbouring countries, and led to the rise of a grand empire decided to throw everything away, returning to the modern era at the cost of his memories.

As three years passed, the boy who was happily enjoying his daily life was once again called back to the other world.

However, what awaited him was the Aletia of 1000 years in the future.

As his past glories became a “myth,” the legend of the youth referred to as the, “Twin Black Hero King,” begins.