[Invincible + System + Regret + Multiple Heroines + Love Triangle]

In a world of high martial arts, one awakens a villain role system, enabling them to travel to other worlds, play the role of a villain, and extract the talent for playing a villain after completing missions.

...

Task 1: Play the role of the chief professor who killed the female lead's family, take in the female lead as his disciple and carefully train her, but ultimately be killed by the female lead when the truth is exposed.

"My beloved teacher saved me, but I killed him."

Task Two: Play the role of a simp who is unrequited love, fawning over the female lead and framing the male lead, only to be forcefully killed by the male lead in the end.

"Only when you lose something do you realize how precious it is. It turns out that my senior brother is to me what water is to a fish."

Mission Three: Play the role of a remnant of the Sin Clan who infiltrated the academy with the intention of breaking the Sin Seal to release the Demon Sword, but is executed after his identity is exposed.

"It's all our fault. If only we had trusted him a little more... He's not the sinner, we are."

Task Four: Play the role of a powerful hegemon in the Spring and Autumn and Warring States periods, who waged wars to conquer other states, only to die at the hands of his concubines.

"He was a tyrant, but also a wise ruler, and we destroyed this peaceful and prosperous world with our own hands."

Mission Five: Play the role of the mastermind behind an evil organization, relentlessly pursued by the protagonist group, and ultimately sacrificed for his great cause.

"God and demon, good and evil, I can no longer tell the difference..."

...

Behind every mission lies the truth of the world.

Unaware of the truth, Luo Chuan returns to the world of high martial arts with his villainous talents.

The heroines who remained in their original worlds couldn't help but shed tears of regret upon learning the truth.

Muchen traveled to the world of daily anime and lived there for seventeen years. During these years, he had been working hard to get married. But he found that since the world's first virtual game was released, the world seemed to have become wrong. Then...

Alien beasts, countless races of the universe—how will they survive in this era filled with slaughter and bloodshed?

My name is Su Huaijin, I am 18 years old this year. I am a transmigrator who was reborn. In my previous life, I died inexplicably while running. When I opened my eyes again, I had become a baby. In the past eighteen years, I have experienced a lot. That's right, the protagonist's start. My parents died in battle against alien beasts!

And so I became an orphan, but on the day of awakening, I actually awakened an SSS-level spatial ability.

Watch as I rise to the pinnacle of this universe!

"Kid the Phantom Thief, known as the Gentleman Thief, the Magician of the Moonlight, the Man of Miracles… yet no one knows his true face. His name, age, height, even gender are a mystery. He is the most enigmatic figure in the world." — Gotham Gazette "Gotham, Metropolis, Star City, Central City, Seaside City… Kid the Phantom Thief's footprints are all over the world. Almost every well-known superhero has tried to capture him, but none have succeeded, not a single one!" — Daily Planet "I used to think Kid the Phantom Thief was just a simple thief, but I was wrong. His abilities are complex and unpredictable. His motives remain unknown. He may not be a bad person, but his unpredictability could have very dangerous consequences." — Batman "I admire him, but…"

Good news, I've transmigrated! Bad news, I'm in a secret room! Transmigrated into Douluo Continent, becoming Qian Xunji, I happen to be in a secret room, before Bibi Dong does anything irreversible. Just as Qian Xunji relaxes, Bibi Dong's words plunge them into an irreversible situation. What a disastrous start! [Congratulations, host, for completing the character's landmark event. System connection successful…] [Host will break through level restrictions and infinitely increase soul power level!] [Host will increase soul power level by one level for each day of check-in. Every ten days of check-in, there is a chance to receive a critical hit, obtaining soul rings, soul bones, self-created soul skills, and other generous rewards!] Fortunately, I obtained the check-in system; Qian Xunji…

[High-level martial arts + exhilarating story but not mindless + invincible crushing power + traversing the starry sky]

Lin Xiao transmigrates to a world of high martial arts

In this parallel universe where martial arts reign supreme, a first-year high school student will face the most important turning point in their life: the awakening of supernatural abilities. Successfully awakening their abilities will elevate them to a position of power, allowing them to manipulate events and control the world.

"It's actually an SS-level ability, Frost."

"A genius that appears only once in a century in the Dragon Kingdom!"

Lin Xiao looked at the young man being praised by so many people and felt a little envious.

"SS-level superpower, I'm so envious! This damn fate, why did it have to send me to this world? Why isn't it following the usual path? Damn it, where's my system? Where's my cheat code?"

When he heard his homeroom teacher call his name, Lin Xiao walked forward with a look of utter despair, ready to reach out his hand.

"Ding, a call from the host has been detected."

"The God-level Cultivation System is currently being tested..."

"Ding, binding successful"

"In response to your waiting, Master Tongzi has prepared a beginner's gift pack. Would you like to accept it?"

Just as Lin Xiao was about to reach out and touch the Awakening Stone, he suddenly trembled, his heart filled with uncontrollable elation.

"It's here, it's here, it's here!"

He didn't care about the system's teasing.

"System, accept! Quickly open the newbie gift pack, buddy, I'm about to take off!"

"Ding, the newbie gift pack has been activated, containing a copy of the Origin of the Holy Law of Time and Space. According to the host's world, this is a superpower talent that transcends SSS level. Do you wish to accept it?"

Taking a deep breath, Lin Xiao silently accepted it.

The once bright sky suddenly changed, with strange phenomena occurring frequently. Lightning flashed and thunder roared deep within the clouds, accompanied by torrential rain and strong winds, as if welcoming a future ruler from the stars.

Good news, I was killed by a train at home.

Even better news: he's become the navigator of the train.

Even better news is that you can travel to the world of anime by train.

What pioneering and interesting things did you do after becoming a navigator?

She was paired with Kirito.

Adopting Lolis from All Over the World

Discussing the relationship between monarch and subjects with a famous queen

The birth of the king was celebrated with a cannon salute; God was lured onto a train; and Shiori almost fell in love with him.

Do these count?

Worlds experienced: Sword Art Online, Black Bullet, Akame ga Kill!, Date A Live, High School DxD, Guilty Crown, Academy Battle, Accel World...

(P.S.: The world-building is mostly from older anime series, with fewer newer ones.)

Good news: Qiao Zhi successfully traveled to MC Minecraft and became Steve. Bad news: Starting on an empty island, there's only a grass block underfoot. Just as Qiao Zhi was enjoying his prison sentence, a space portal appeared before him. Giant: Erwin, survive, and I'll tell you the truth. Parasyte: Someone used their powers to gain the heart of a long-time crush, but I hope you'll dispose of the body properly. Demon Slayer: Muzan, don't be afraid, I'll heal you right away. Hunter x Hunter: Meruelu, for an ant, you're too arrogant. Bleach: Aizen, when did you start to think I didn't use Kyoka Suigetsu? Drawing swords, accelerating torches, better cutting boards, equal exchange, endless greed... God gradually regains his authority... In the anime, perhaps...

At Kuoh Academy, a mysterious transfer student wielding the "Chains of Heaven" made his appearance.

In the labyrinth city of Orario, the Shadow King has awakened from his slumber.

At Chiba’s National High School for the Gifted, the heir to the Sun Breathing technique swings his blade to slay demons.

Different worlds.

Different fates.

Different stories.

one unfolding a unique tale—each one unforgettable.

Tang Yu transmigrated to the Douluo Continent and became the son of a titled Douluo elder of the Clear Sky Sect. He started with the "Hammer Tang San System," which allowed him to become stronger by hammering Tang San, and included four system tasks: [Task 1: Initial Hammering of Tang San.] [Task 2: When Tang San first returned to the Clear Sky Sect to acknowledge his ancestors, hammer him hard and blast him out of the sect.] Completing these tasks would reward Tang Yu with various rich rewards, including soul bones, external soul bones, and martial souls. Tang Yu: Okay, okay! Hammering Tang San makes me stronger, right? Here I come, you little brat! Tang San: Don't come any closer! Please, Brother Yu! Please stop hammering me! Tang Yu: Impossible! This is absolutely impossible! How could his Clear Sky Hammer be so powerful?