Giorno straightens up further, Gold Experience turning the mouse back into a pen, so that he didn't have to worry about it, and he gives a short bow to Jonathan, as it seems appropriate. "It's a pleasure to meet you Jonathan, I am Giorno Giovanna." He said with a smile, trying to be pleasant in spite of his internal panic. "Jolyne has been helping to teach me some idea of the Joestar family. It would seem there is much that I do not know." He said with a bit of a nod.

"If Dio Brando is the person you mean, then yes, according to my mother, he is, or was at least, my father." He offered, opening his wallet to the picture he had again, one showing Dio, but more than that, it showed Jonathan's body from the neck down, including that birthmark, visible and almost on display. "I never had reason to doubt her words on this, I have the same birthmark as he in this photo." he explained. It was no more than he'd already told Jolyne, so this much was not an issue, even if his insides still rolled wondering what more would be asked.

Gold Experience shifted slightly now, moving to a somewhat less protective position, his unoccupied arm sliding around Giorno's torso, under his arms, in a semblance of a hug, while he tipped his head, green eyes now watching Jonathan closely. Through his stand he could feel that the 'life' in the bat was far more than what it's size implied it should be.