[JoJo's Bizarre Adventure] Fortuna's Life Restart Simulator

After being reborn, Fortuna discovered that she had suddenly acquired a strange "game interface." It said she could restart her life's journey whenever she wanted, immersing herself in different lives.

But is that really how it works?

JOJO arc (probably around four worlds):

World 1: On her first trip to Italy, Fortuna meets a shy young man with a fashionable look who stands up for others. After arriving in Naples, she happens to save a little boy with a bob haircut, who suddenly becomes a member of a gang several years later! Her long-haired ex-boyfriend from school mysteriously disappears, leaving her to be dumped; a female classmate from her social internship keeps looking at her as if she wants to say something; her tenant is always bringing oddly dressed people back to the apartment; and, strangely, she's always the only one who can't book a flight home...

After the JOJO arc, I'll most likely write Detective Conan and Jujutsu Kaisen.

I suddenly wonder: once fate brings people together, can different choices set the world on different paths?

A few notes for readers: Third-person narration, updates whenever inspiration strikes, very slow plot progression, and the simulator storyline takes up little of the story. The timeline will be changed, so proceed with caution if that bothers you. The plot has been heavily adapted, with an OOC warning. Pairing undecided. This is a pantsed, outline-free work, written for love and as a treat for myself. The author isn't very good at listing content warnings, so readers who want spotless relationships should proceed with caution. No writing advice, please~

Theme: Can we take control of fate?