Staying Alive Cautiously in the Celestial Realm and Becoming the Strongest - Chapter 1226: Star Sea (31)

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

Imagine a system that would let you create any skill you could imagine. Being the best at whatever you dreamt of becoming.Felix, who thought his whole life would remain average and ordinary despite hating it gets an unescapable chance to encounter the Legendary Truck-kun. Knowing it was a chance to change his life, which was a repeat of struggle every day, he happily accepted his ticket to Isekai.Waking up in the body of a wounded boy in a fantasy world, the boy finds out that his fate seems miserable. After nearly experiencing something worse than death, he finally awakens the Great Skill Creation System.Creating skill after skill that lets him achieve his goal, Felix treads upon the darkest of secrets and conquers a myriad of worlds with his trustful comrades. Watch how he changes the fates of everyone and the universe on his mystical journey.

Akira Kisaragi traverses into the Bleach world, unlocking a check-in system.He initially thought that by checking in daily, he could become stronger, soon become the Captain-Commander, join Division Zero, punch Yhwach, kick the Soul King, and marry Unohana...However, the system's style wasn't quite what he had imagined.〈 Check-in complete, obtained Genryūsai Yamamoto's secret roasted sweet potato! 〉〈 Check-in complete, obtained exclusive attribute: King of Normal Attacks, effect... 〉〈 Check-in complete, obtained Retsu Unohana's... 〉Akira's eyes suddenly lit up!“Seems like this might not be so bad after all!”

A human from Earth is thrust into the [Hunter x Hunter] world, becoming the Zoldyck family’s defiant, red-eyed prodigy. They call me a genius and the rightful heir, but I say that’s Killua’s burden to bear.Armed with crimson eyes, and a subtle yet powerful system, I’ll rewrite destiny, upend the world, and embrace the chaos with a wicked grin.