Naruto System in One Piece - Chapter 512

System: You are now a lowly male supporting role, a passerby who wants to go offline at any time, please keep secretly and grow vulgarly.
Shi Yan: Very good, thank you for your suggestion.
The first world: Shi Yan, as a little prince born in a cold palace, made himself an emperor.
The original male and female protagonists, under his witness, became grudge couples.
The second world: Shi Yan, as the youngest son of the princess who died tragically, made himself a powerful minister over ten thousand people.
The original male and female protagonists, under his witness, became grudge couples.
The nth world: Shi Yan, as a genius in the world of comprehension, has made himself the number one powerhouse in the Three Realms.
The original male and female protagonists, under his witness, became grudge couples.
The system feels that something is wrong.
Shi Yan instead persuaded him: Let the male and female protagonists come together in the end no matter what the circumstances are, isn’t it the self-cultivation of the tool man and the male partner?

Content tags: Kuaichuan Shuangwen Metaphysics
Search keywords: Protagonist: Shi Yan ┃ Supporting role: ┃ Others:
One sentence introduction: The male partner is beautiful alone
Purpose: strong heart, unmoved by wind and rain

- Description from novelbuddy

When Caesar learned that he had traveled to the world of pirates!

In order to become stronger, I started hell-style training, looking forward to going to sea one day,

Stir up the situation and rule the world!

One day, a pirate group came.

Looking at the familiar figures behind the captain,

Caesar instantly knew his name – Lockes!

After the Island of the Gods incident…

Garp: When did a Caesar appear in the Rocks Pirates? Almost fell into his hands!

Roger: What kind of strange ability is this? Domineering! ?

White Beard: The scars on my body are thanks to Caesar!

Golden Lion: How is it possible! What ability is he hiding! ?

Kaido: Bastard, it turns out that this guy has been paddling all the time!

- Description from novelbuddy

‘He’s so cute I want to kick him flying through the air.’

Bai Yao runs a seafood restaurant in a seaside town. One day, he saw a small sentient sea otter being bullied.

Out of pity, he helped out the little sea otter.

The sea otter acts quite defensively, baring his teeth, all while still covered in wounds yet to heal.

His way of saying thanks, is gifting Bai Yao an oyster in his pocket that’s been sitting there for who-knows-how-long.

Bai Yao ends up bringing the wounded and exhausted little sea otter back to his restaurant, giving him food and a shower.

Though the sea otter is still quite scaredy and defensive. He wouldn’t let Bai Yao rub his cute little face, or even ruffle his fur.

That’s not all the quirks of the little sea otter either. Bai Yao realised he’s a dummy that didn’t even know how to anthropomorphise.

Later that day, Bai Yao wakes up in the middle of the night, when there is something soft he’s holding in his hand.

He looks, and sees the little sea otter has put his paw in his hand. The sleepyhead is also snuggling on him, his head brushing against his chest.

Not feeling drowsy enough to sleep anymore, Bai Yao just props his head on his arm, watching until the otter finally wakes up.

When he finally does, he looks around, and sees that it’s Bai Yao; he squeaks, and then nestles his face against the fingers of Bai Yao.

Amused, Bai Yao asks, “oh? I thought you were a tough little guy that didn’t like petting?”

- Description from Novelupdates

Fade was a legendary assassin that could kill just about anyone, as long as the price was right and the reason was just.

One day as he was reminiscing about his life when he lost someone important, he fell asleep. When he woke up he was in a weird place, a different body, a different world.