Both Shi Qiu's time travels are extraordinary.

One became a member of the Uchiha clan in the Naruto world, and the other became a member of the Pirate King's crew in the One Piece world.

The Naruto world.

Uchiha Shikichi wanted to change this messed-up ninja world, and his first step was to seize power within the Uchiha clan and occupy Konoha...

One Piece world.

Shi Qiu is a true pirate who abides by the rules of the pirate world and pursues power, fame, and wealth.

From a crew member to a legendary pirate, he gradually grows stronger and more powerful, ultimately achieving his ambitions...

Shuji Taketori: Plot? I am the plot! Jiraiya: To establish a heart for young girls, a destiny for young women, to carry on the family line for wives, and to bring peace to widows! Shuji is my life mentor! Kaguya Otsutsuki: I'm going to come out and beat my son! You two little brats, just you wait! Naruto: Shuji said, if they throw poop at me, I'll... I'll grab my kidneys and liver! Sage Art: Splatter - I'll grab my kidneys and liver! Sasuke: Nii-san~ Showing off is a bad habit, but I can't stop. I'm going to catch up with that person! Amataras! Madara: That's great! I acknowledge you! The Dance King from Konoha! This is a fun-loving story of a humorous person healing the dark ninja world.

This is the story of a cute younger sister who transmigrates into the body of Uchiha Shisui. After resolving the clan massacre, she chooses to laze around the ninja world. Uchiha Shiyuki: Sorry, brother, it's not that I don't want to go back, it's just that the Akatsuki gave me too much! Akatsuki: Your sister is ours to raise, don't worry. Uchiha Shisui: ... (Transformation, Uchiha clan, Head-Patting Village, just for fun, no conspiracy theories, defection from Konoha, some jokes, lighthearted.)

Office worker Chen Yao is unexpectedly transported to a world overrun by monsters. He witnesses his fellow travelers die tragically and struggles to survive in an endless cycle of terror.

Saeko Busujima: Can a killing machine like me have the right to be happy?

Kaneki the Ghoul: You want to eat me again, huh? Well then, it's okay if I eat you, right?

Alice: Is that the G-virus of the Son of God? No, it's a far more powerful organism!

Kaido, one of the Four Emperors: No, that man is the one who deserves to be called the strongest creature!

...

Chen Yao: I just want to live and find my own answer.

Starting with the T virus, then the G virus, the C virus, RC cells... and even the Blacklight virus!!

Fight through endless cycles of reincarnation, witness the myriad aspects of life.

Even when you are in the depths of hell countless times, the light is still there.

Past, present, future, and destiny. These form the foundation of the world and represent the power of the present. The past is eternal, representing unchanging power. The present is the era, representing the strongest power. The future is potential, representing infinitely powerful yet infinitely weak power. Chosen by the past, one becomes the master of the unchanging. Chosen by the present, one becomes the king of the era. Chosen by the future, one becomes the emperor of the end and the emperor of hope. Chosen by destiny, one becomes the emperor of fate! The chosen youth ultimately embarks on the path planned by destiny. Not wanting to be bound by fate, he continues forward. If humanity cannot achieve this, then he will become a stronger being, until he becomes an ultimate existence that even gods cannot look directly at. The world is finite, but dimensions are infinite. Continuous battles lead to becoming the ultimate being. Becoming the master of destiny! The female lead is Yae Sakura (?ω*?). Worldline: Akame ga Kill! → Fourth Holy Grail War → Godslayer → Dragon Clan → Problem Child [First two volumes are for beginners, poor quality]

Izumi transmigrates to a world where everyone can convert their past life memories into power in this life. He initially thought transmigrators didn't have past lives, that he was just an ordinary person in his previous existence, but suddenly he gains the powers from the anime he used to watch. First life: Kirito... How could I, Kirito-sama, possibly do gua sha? Second life: ... Third life: ...

[Naruto + Multiverse] A pair of Sharingan eyes mutated by the soul of a transmigrator will eventually reflect the Love Clan standing tall across countless worlds. "Just wait until I pull out my Spark Lens, then you'll know you've regretted it!" "War God Susanoo - WarGreymon!"

[2019 Newcomer King] The otaku beauty Hoshino Chiyuki, carrying her FGO Heroic Spirit deck, transmigrates to the world of Yu-Gi-Oh!. "Blue-Eyes White Dragon is invincible!" "Activate the effect of Grand Hero!" "Stella!" "My most loyal servant, the Dark Magician!" "Activate the effect of Grand Hero!" "Stella!!" "I..." "Activate the effect of Grand Hero!" "Stella!!!" Amidst ruins and endless corpses (referring to Grand Hero), Chiyuki wipes her forehead and smiles brightly: "[Slacking off, Yui]"

A proficiency certificate that lasts forever! A system that allows me to traverse countless worlds! I lack nothing now! In Dr. Stone, the Sword God of Ten Mile Slope, the Wilderness Gourmet, I took my first extraordinary step to save a lost civilization. In One-Punch Man, he extended an invitation to unemployed office workers: "Want to become a savior hero?" In the Biohazard world, a man and a panda roam the apocalypse: "Dragon Warrior? Savior Hero!" In Ling Cage, Battle Through the Heavens, and Mortal's Journey... step by step, he has come a long way, and in countless worlds, everyone praises him as the supreme and holy savior. But only Lin Hao knows that all of this is due to his own hard work and sweat! System! Proficiency! Give me 1000% support!

Good news, I was killed by a train at home.

Even better news: he's become the navigator of the train.

Even better news is that you can travel to the world of anime by train.

What pioneering and interesting things did you do after becoming a navigator?

She was paired with Kirito.

Adopting Lolis from All Over the World

Discussing the relationship between monarch and subjects with a famous queen

The birth of the king was celebrated with a cannon salute; God was lured onto a train; and Shiori almost fell in love with him.

Do these count?

Worlds experienced: Sword Art Online, Black Bullet, Akame ga Kill!, Date A Live, High School DxD, Guilty Crown, Academy Battle, Accel World...

(P.S.: The world-building is mostly from older anime series, with fewer newer ones.)