So what happened to Giorno after part 5 of JoJo’s Bizarre Adventure?
Well, he didn’t appear in part 6 probably because Araki didn’t know what to do with him!
Giorno is a good person, despite being merciless. He would not want to work with Pucci.
He would have been able to completely negate Made in Heaven if he had been at the event. It’s not just because of his father’s blood but because he is the only person to have both the will and the power to stop Pucci.