Great grandaughter, he supposes that's possible. But as he usually does with the Greek side of the family, Nico's brain tries desperately to shut off any association past immediate relative. If he didn't, well, case in point with Orpheus being the son of a muse, all nine of whom were daughters of Zeus (Uncle Zeus? Ugh, no thank you) and therefore Nico's nieces, which would make him Nico's... grand-nephew?
It's just, a weird way to think about someone definitely older than himself. So he tables that for now, frowning at the staircase that would take them back up to the second floor.
In general his instinct is not go to up (See: Uncle Zeus, Ugh), but since he's tried everything he can think of down here he guesses that Orpheus has a point. "I can't break them down either," he admits a bit grudgingly, though he's definitely usually strong enough to get through an ordinary door. He almost suggests himself that Orpheus sing, but he's wary of that, too. The weaknesses of a divine parent tend to be amplified in their half-mortal children, and Nico does not want to turn into a fool around a famous hero like Orpheus. "There was another staircase on the next floor that I haven't tried yet."
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It's just, a weird way to think about someone definitely older than himself. So he tables that for now, frowning at the staircase that would take them back up to the second floor.
In general his instinct is not go to up (See: Uncle Zeus, Ugh), but since he's tried everything he can think of down here he guesses that Orpheus has a point. "I can't break them down either," he admits a bit grudgingly, though he's definitely usually strong enough to get through an ordinary door. He almost suggests himself that Orpheus sing, but he's wary of that, too. The weaknesses of a divine parent tend to be amplified in their half-mortal children, and Nico does not want to turn into a fool around a famous hero like Orpheus. "There was another staircase on the next floor that I haven't tried yet."