Becoming Immortal Through Getting Married - Chapter 414 - : Delay Plan

Crossing into the world of Naruto, and acquiring the One Piece system, with all the powers of the world of One Piece, swordsmanship, devil fruit, domineering.

-Do you think that your fire is very powerful? I have the burning fruit.

-Do you think that your thunder is very powerful? I have a thundering fruit.

-Do you think that your otter is very powerful? I have the frozen fruit.

-Did you said you want to die? Don’t worry, I also have a nickname: Death Doctor.

- Description from Novelupdates

Takamine Haruto transmigrated into a crossover anime world. His childhood friend is Eriri, his deskmate is Yukinoshita, the school beauty next door is Kaguya, and his new neighbor is Gabriel.He originally thought he could enjoy a peaceful life in this slice-of-life anime setting!But then—he stepped outside and found the Female Titan, Annie.Around the corner, he ran into the gluttonous Kamishiro Rize.A concrete statue that twists people's necks the moment they look away?A shy entity that hunts you to the ends of the earth if you make eye contact?An immortal lizard that adapts to any environment and continuously evolves?Takamine Haruto was overwhelmed.To maintain his peaceful daily life, he established the SCP Foundation to contain anomalies from across the multiverse!

At five years old, the child from the metaphysical family is about to leave the mountain, and the bigwigs of the capital city have come out to see him off.What's so great about a little dumpling?Yun Xiaoqi innocently spreads his hands, claiming he never intended to show off his powers; his simple wish is to be a good child while subtly dominating all sorts of spirits.Many oppose him during this time, and the “Little Celestial Maiden” Yun Ying teams up with various metaphysical leaders to continuously challenge him, only to be soundly beaten, losing face.Finally, the bigwigs bow down in reverence: it’s we mortals who were blind and offended the little ancestor!***The news of the little dumpling ruling over the metaphysical world reaches the Nether Realm.The Lord of the Nether Realm frowns: this milky little master must be the youngest and most temperamental special envoy from the Nether Realm.The little dumpling, carrying a lantern, walks among the mountains and rivers of the earth, guiding the souls with a proud stomp, declaring: Lord of the Netherworld is not much older than me, who are you calling childish!The noble and refined Lord of the Nether Realm lands and transforms into a twelve-year-old boy, gentle as jade: whatever the little envoy says is right.Yun Xiaoqi keeps waving his hands: nope, I'm just working here.

I fell into a game world out of nowhere with an instant kill skill.
And then somehow, I became a bigshot.