[One Piece, summon, cool story, system, upgrade, invincible]

Travel through time and become Luffy, and bind to the invincible system.

It is my destiny to aspire to become the Pirate King.

Being targeted by Nami is naturally the benefit of choosing to be the Pirate King.

Lin Yu traveled to the world of Japanese anime and found that he was a neighbor of a dead elementary school student. He also found that Demon Slayer, Bleach, and Naruto had appeared. In such a dangerous world, what should he do? Fortunately, the diary system was awakened at this time. So he made the anime goddesses hate him so much that they went crazy looking for him. "Xiaolan, do you want to know where Kudo Shinichi went?" The song of the little dragon man sounded: "I won't tell you, I won't tell you, I won't tell you, you, you!" "Tsunade, do you want to know how Nawaki died? If you have the guts, find me!" "Haha, if you want to find me, dream on, who doesn't have a few vests?" "Sister Misaka, if you have the guts, hit me, hit me!"

These days, time travel is nothing new. To be original, you need new methods, you need some outrageous moves. The Type-Moon crossover anime series starting with FGO, Type-Moon Heavy Industries—Fate/Extra: The Holy Grail War of the Moon, is currently being serialized! Gaia: I ask you, Soviet Marshal, would you be willing to become a Heroic Spirit under my command and work overtime every day? Su Mo: Becoming a Heroic Spirit is fine, but working overtime is impossible, I'll never work overtime in my life. Mashu: Senior, get up and work overtime! I want to experience the feeling of explosive damage output! Jeanne d'Arc Alter: You should feel honored that I've willingly come to cling to your leg. Merlin: Let's go, Kongming, with him here we can go home. Kongming: Hmm, young man, from now on, the overtime work is your responsibility.

Izuki Karuta arrives in the world of Detective Conan, a world without the jurisdiction of the Heavenly Dao.

He learns extraordinary martial arts that defy the laws of life and death, opens a shop to improve his luck, and absorbs malevolent energy to become stronger.

Sister Bei served as her secretary, and Shirley kept her at home. Guests came every day, and her good deeds were praised by everyone.

Ran: I'm willing to do anything to save Shinichi!

Conan: This guy's a charlatan! Don't be fooled by him!

Matsumoto Sayuri: Please help me for my father's sake!

Inspector Megure: This person is linked to multiple murder cases, but there is no concrete evidence...

Sherry: Help me punish someone, and I'll allow you to come closer~

Gin: I've broken my leg again, is nobody going to do anything about it?!

This time, Izuki Qingtian is going to live for herself, do whatever she wants, leave no regrets, and pocket money, power, and beauty, while staying out of the underworld and the legitimate world!

On the evening of April Fool's Day, April 1st, the Kasumigaoka family held a family meeting and announced two things.

The first thing is that Dad has to go to Hokkaido for a while because of a job transfer, and Mom will go with him.

The second thing is that the youngest son Dongzhi in the family is not his biological son. He was picked up from the doorstep on a winter night fifteen years ago. The couple saw that the child was cute, and they didn't have a son, so they adopted him as their son and adopted him as a child husband...

ps1: The protagonist traveled through time with his body, and for unknown reasons he turned back to his infancy!

ps2: In the fusion world of Zongman, when the assets and income reach a certain level, you can legally marry multiple wives!

[Multiple female protagonists + system + time travel]

Traveled to Runeterra and became the only surviving member of Ashe's tribe.

The good news is: I traveled through time and am Ashe’s childhood sweetheart.

The bad news is: I have traveled through time and space to the body of a dead person, and now I am just in my last moments of life and will die soon.

Ashe: "Aidil, you are in very bad condition. If you don't restore your body temperature quickly, you may not survive the Freljord tonight."

Me: "What should I do? My body feels so cold that it's hard for me to even move."

Ash: "It's okay, I'll help you."

Me: "Help me? How?"

Watching Ashe approaching, Aidil felt the frozen blood in his body begin to heat up.

"Fuck, it turns out it's physical heating, that's amazing!"

...

When I was on the verge of death, I met the Frost Witch, Lissandra, in my dream.

She seemed to have come into my dream to see me on purpose.

This should have been something to be happy about.

But I soon stopped being happy.

Because the other party seemed to have seen through my origin as a time traveler.

Lissandra: "Who are you? Your spirit exudes an aura unlike any other in the Freljord."

I:???!!!

"There's nothing I can do. Now that my origins have been discovered, I can only act bold and fearlessly and pretend to be awesome."

So, in order to survive, I had to take advantage of my foresight and trick Lissandra, this old housegirl who had lived for thousands of years.

Lissandra was shocked: "You said you have a way to deal with the void?"

"You said you came from a world outside of Runeterra? Aren't you the same creatures as the Celestials?"

What, **are you competing in the ** place? Use the Qualification Reversal Card and G will instantly become S! What, the last kick can't break through the enemy? Use the Breakthrough Card and no one can stop you! Injured? There's a Cure Card! You want a triple crown, did you ask me? You want a winning streak, did I agree? Do you think I'm the best trainer in history? No, no, no, I'm just a card player! New book has been released, "Uma Musume, but God Rewards Hard Work"

My name is Ash, and my goal is to become the world's number one Pokémon Master.

And the opponent I will face is...

Xiao Mao is a strong rival of a mysterious old man named Qinglu who once became a champion in a parallel world.

Lan is a mysterious girl who travels from a world called Blue Star and owns a real Ditto.

At the beginning, there is an invincible Gyarados who is born to be a king, and his target is Misty, the gym leader of the world's number one water-type king.

Brock, the future world's number one Pokémon breeder, accidentally awakens the Eye of Analysis, and can automatically generate the best Pokémon training plans in his mind.

Huang, a shy girl, is protected by Beedrill, an invincible knight with the power of Evergreen and a spirit of gold.

Xiaoyao, the Fengyuan dancer, who integrates the memories of the Pokémon Ruby and Sapphire worlds and possesses a physique comparable to that of a Super True Rookie.

Xiaoguang, the daughter of a wealthy family, once traveled through time and space and returned from the Xicui area.

Alice, the true dragon messenger who possesses the power to control dragons.

Princess Serena of Carlos, who owns the Perfect Life Simulator and is dedicated to finding the most perfect life.

Joined the chat group and can communicate with the parallel world's full-level self, the Alola daughter Liliae

…

As for me, I started with a Pichu that seemed to have arrested evolution, and a Froggy that wouldn't produce Poké Balls.

You ask me what I should use to fight?

Sorry, I think I can see the barrage.

Moreover, the barrage called me the protagonist.

[MYGO] + [Lonely Rock] + [Daily Life] + [Multiple Female Protagonists] + [Protagonist Humanoid Succubus] + [Invincible Flow]

Bai Li, who traveled through the fantasy world and practiced the ruthless way for four hundred years but still died under the heavenly calamity, gained enlightenment.

If I give him another chance to start over, he would be so ruthless that even a dog wouldn't be able to behave!

When he opened his eyes again, he actually came to a huge mess of anime world.

In this life, I just want to live a gentle and peaceful life like plants, but they keep coming.

……

Goto Ichiri: It was obviously me who came here first, whether it was to get to know Baili-san or to become friends with him...Nijiga, why did you?

Nagasaki Suyo: Is it bitter? It's over. Xiaoxiang, please don't contact me again. I'm afraid Bailijun will misunderstand.

Yukinoshita Haruno: You said you have a girlfriend? Does that mean the position of fiancée is vacant?

Multiple female protagonists + multiple worlds

A meteor shattered an ordinary life, and Li Junye, wielding the [Key of Time Travel] and the [Key of Copying], descended upon the heavens!

The story begins with a sudden appearance of "Heaven's Lost Property," and while Tomoki is still dumbfounded, he is bound to Ikaros.

"Analyze! Repair! Strategically use the omnipotent angel Alpha Icarus,"

In Highschool of the Dead, zombies are as insignificant as weeds, yet Saeko Busujima tames them with her sword.

Guilty Crown: The throne is seized, and the butterfly's song purifies the apocalypse!

"Lightbringer" gathers the three great messengers and the nine evil gods to rebuild the power of the sun god!

The Holy Grail of Fate? I am the ultimate wish-granting machine! Saber's Excalibur sings only for my lord!

The demonic chess piece rules the Dragon Emperor, and the eight great demonic energies burn away the void!

The local forces of water, wind, fire, and shadow merged under the [Tiger Talisman]—

The heavens and myriad realms trembled! Talismans formed the bones, demonic energy the blood, and divine annihilation manifested as the power!

Li Junye ignited the flame of creation in the void:

Eternal Creation!!!

Heaven's Lost Property → Highschool of the Dead (completed) → Guilty Crown (completed) → Light Warrior (completed) → Seirei Tsukai no Blade Dance (completed) → Fate (ongoing).

Multiple female leads!!! Multiple female leads!!! Multiple female leads!!! I'm saying it three times because it's important. If you're not into pure romance, please don't read this. This book is written out of love, and all harem novel enthusiasts are welcome.