[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.

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.)

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?

Bound to an improperly trained "simp" system, charm increased tenfold! First, a small goal: dominate all the beautiful girls in school...including teachers and the principal! Huh? They're all so proactive! Kasumigaoka Utaha: Can we have a dating simulation? (For research for my new book.) Li Kong: Lots of people ask me out, remember to book in advance next time! Himuro Ayame: Are you free for dinner tonight? Li Kong: Yes, but I never pay for dates with beautiful girls. Himuro Ayame: Then I'll treat you. Ellie: The girl you were having dinner with last night, the one you were being intimate with, looks a bit like my sister? Li Kong: She's your sister. If you have a problem with that, let's break up! Ellie: It's okay, I can't live without you. Ayase Saki: Was that a girl you were talking to on the phone just now? Li Kong: She's your mother. She asked me to go to a hotel tonight. ...Hayasaka Ai: A maid who doesn't want to be the mistress isn't a good maid! Kitagawa Kaimu: If I win this battle, you have to go out with me! Kirisu Mafuyu: I haven't handed in my homework yet! Toyokawa Shoko: You've taken all my teammates... Saionji Sekai: Mom's shoes are here too, and this voice is... (Male/Female, all virgins accepted)

[Multiple Women] + [All Heavens]

Mo Bai unexpectedly obtained a system that allowed him to travel through various film and television worlds, and from then on, his presence could be seen in movies, TV series, anime and other film and television worlds.

In his previous life, he couldn't even work as a beast of burden because of a back injury. In this life, Mo Bai wants to live a more exciting life.

[#Invincible #Lighthearted #Humorous #System #Refreshing #Time Travel]

Gu Changge transmigrates to Douluo Continent and starts as a max-level God King.

Sword Bone Douluo arrived, calmly revealing his cultivation level: "Don't get excited, I'm here to propose marriage."

I, Uchiha Hofu, accidentally traveled to the world of Naruto.

I obtained the Multiverse Sign-in System! And I got the SSR-level treasure, the [Herrscher of Reason Core]!

I single-handedly repelled the Iwagakure army!

I led my people to evacuate Konoha and establish our own clan!

I slaughtered the darkness of Konoha—Shimura Danzo!

While chatting and laughing with Ban Ye, we decided the fate of a great nation!

I witnessed the collapse descending upon the ninja world!

I defeated the strongest enemy I have ever encountered—the Herrscher of Water!

I am the current head of the Uchiha clan, the former daimyo of the Land of Water, the five-core herrscher of the Hokage, and the demon god of the end—Uchiha Hatake!

The Otsutsuki arrives in high spirits, only to be brutally beaten by an ordinary Uchiha Jonin. That would be quite a sight!

Bai Chengfeng transmigrated to a world of everyday anime and manga, acquiring the [Doujinshi Artist] system. By continuously drawing doujinshi, he could extract various overpowered abilities. He created a series of works including the [Time Stop Series], [Xx Modulation Mode], and [Tentacle Summoning Xx]. He initially thought he would spend exciting and thrilling days in this everyday world. However, he didn't expect to be pulled into a place called the Multiverse Chat Group. ... Izumi Sagiri: "Onii-chan is the best person!" Kocho Shinobu: "Time stop? How can there be such an illogical ability?" Black Tower: "...Why are all your abilities so abnormal?!" Lucy: "Uh, are you sure this is called overthrowing Night City? How come everyone thinks you're their friend? What, you say it's hypnosis? That's too exaggerated!"

[Starting with Chronos + Kamen Rider + Crossover Anime + Tanzaburo Higashijima + Nisekoi + Multiple Heroines]

Transmigrating to various anime worlds, Shi Wushuang begins as Kamen Rider Chronos. In the realm of the God of Time, day and night are but a thought away, and time stops and flows backwards only for him.

On campus, Shi Wushuang is a gentle, cheerful, and sunny male god, but when facing strange people, he is a cold-blooded judge and a grim reaper.

The city's impurities, the Amazon lurking in the shadows, the constellation apostles on campus, the Shocker monster causing chaos, and monsters from other knight worldviews in the dimensional rift, and the BOSS.

When he is Kamen Rider Chronos, he puts his index finger to his lips and says, "Shh, during the trial, the scene must remain serious."

When he was Kamen Rider Eternal, he gave a thumbs-down sign and said, "When you get to hell, just say my name, Shinigami, and you can skip the toll."

When he is in Kamen Rider Evol Black Hole form, his right hand spins like a black hole: "This day next year will be your death anniversary, Ciao."

When he was the Blade of the God of War, he pressed his thumb down on his index finger and said, "Don't misunderstand, I just want to kill you all, or be killed by you all."

When he is Oma Zi-O: "If you do not bow to the king, you have already lost your true destiny. Your name is on the Reincarnation Stele. Bow with each step. If you are devout and sincere, your sins will be halved on the road to rebirth."

All sorts of weirdos: What? I'm taking on the Knight Boss one-on-one?

...

The tentative list of female leads includes: Elisa who speaks Russian from time to time, Shiina Mahiru, the angelic neighbor, Okada Yuriko, the eccentric Takumi, Kirisaki Chitoge, Kato Megumi, and Kasumigaoka Utaha, the black-stocking fanatic.

[Western Fantasy + Fusion Worldview + DND-like + Multiple Female Protagonists + Fighting Dust]

Elves, dwarves, halflings? Where does this come from?

Mage, priest, paladin? Supernatural powers? Interesting...

Spellcasting talent detected? Does that mean I can become a noble mage?

"No, buddy, what do you mean by assigned to the Geotechnical and Natural Sciences School?"

"Damn it! How come I'm assigned to civil engineering after arriving in another world?"

…

"Master Mage Gerudo, what do you think of the famous and legendary graduate of your magic academy?"

Many years later, when faced with an interview, the elderly magician remained silent for a long time.

"Nothing with a mage's soul!"