Yamanaka Maple Leaf, a social slave in her previous life, died suddenly from overwork and traveled to Naruto. Good news: Both parents are alive and have names. Bad news: In the world of Naruto, there is a Death God system. Yamanaka Maple Leaf: Why are all the system tasks about healing? This damn spiritual power, not even a drop of chakra left me without any ninjutsu, I can only be a veterinarian with spiritual power! Parents have been "traveling frogs" for years, leaving notes and shells and running away. Hatake Kakashi seeks advice on Taijutsu? Kurenai Yuhi's eyes are full of admiration? Asuma Sarutobi sees him as a rival? Uchiha Obito shouts "Hokage"? Tsunade: "Kid, I heard that you have a high talent for medicine, how about being my apprentice?" Maple Leaf: "Then I will reluctantly agree." Tsunade: "Kid,

Lin Yu transmigrated to the world of Demon Slayer. Awakening the Character Inheritance System, he immediately inherited the legacy of the blind swordsman, Fujitora Issho. Thus, a swordsman of unparalleled skill and mastery was born… “This swordsmanship!” “Is this really a sword that a human could wield?!” Kibutsuji Muzan collapsed to the ground, his face filled with unprecedented terror. Kibutsuji Muzan once again experienced the terror of being dominated by that figure four hundred years ago, even more terrifying than before. “This oppressive feeling…” “Perhaps, compared to us, you are the monster.” Upper Moon One, Kokushibo, stared intently at the man standing before him. Having experienced the terror of that man four hundred years ago, Kokushibo could better understand the terror of the man before him.

Didiski Xia Zheteng couldn't understand it at all. He was just watching the excitement, how did he end up transmigrating to the world of One Piece? And even awakening some kind of "spectator system"? But watching the excitement was really fun. So, wherever there was a big spectacle in the world, there was bound to be a Marine Vice Admiral who didn't care, didn't intervene, didn't catch thieves, and always had a watermelon and claws. "Enies Lobby is about to be breached, Vice Admiral, make your move!" "No rush, let's watch the excitement." "The prisoners at Impel Down are about to escape, Vice Admiral, make your move!" "What's the panic, let's watch the excitement." Sengoku: "Xia Zheteng, if we don't act soon, Ace will be rescued." "Oh, I really have to join in."

Bloodline factor + animal-type Devil Fruit = Monster Girl? Monster Girl + Dango Fruit = Beasts? A time-traveling Brian, with a vision that transcends the limitations of this world, uses his bloodline factor to create an unprecedented army of Monster Girls. He encounters the Rocks Pirates and becomes one of their top officers, participating in the Battle of God Valley. A year later, a whale falls and life springs to life. Golden Lion, Whitebeard, Big Mom, and the Beasts rise to become the Four Emperors. Kaido's fortune is shattered, his title as Master, and even the Fish-Fish Fruit. Should he be adopted by Big Mom? What's next? A journey of pirates spanning four decades, battling the Navy, supporting the Revolutionary Army, and battling the World Government—what's the thrill? Brian, commanding hundreds of Monster Girls, declares: "Who the hell is Im? Get off the throne!" ... Also known as: "Pirates: The Beginning to Seize the King"...

Yuro transmigrates to the world of One Piece and becomes bound to a super check-in system.

You start by obtaining a physique enhancement pill and a Logia-type Devil Fruit.

Yuro broke into Beehive Island, gained Rocks' approval, and won the praise of Whitebeard and Shiki, eventually joining the Rocks Pirates.

From then on, the Rocks Pirates gained a new strongest fighter, possessing the strongest physical skills, the strongest Devil Fruit, the strongest swordsmanship, and the strongest Haki.

Rocks: Yuro, I call you the strongest!

Whitebeard: The strongest man in the world? That's that guy's exclusive title!

Roger: I am not as good as Yuro, he is the true king!

Garp: I'm tough enough, but he's even tougher than me!?

The power system in this book is set in Chapter 50. You can check it in advance if needed.

{Summoning build + Rocks Pirates starting lineup + No Mary Sue tactics}

Travel to the world of One Piece and awaken the mutant summoning system.

The X gene was directly modified to correspond to a Devil Fruit. Aliases: Pirate; started as a tiger, wolf, and dog, constantly entangled with Kaido; previously received many negative reviews for calling Whitebeard "Old Man," but has since corrected his ways and changed it to "Big Brother." Currently one of the Four Emperors.