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How do Angeal and Lazard feel about Heidegger being a creepy old perv around Sephiroth tho?
Heidegger MOSTLY keeps it it on the down-low, but Angeal and Lazard are observant enough to notice. It definitely creeps them out something fierce, even if Sephiroth himself seems mostly unperturbed. Since he doesn't really want to address the issue, there's not much they can really do. Heidegger outranks both of them.
Hojo, to his utmost credit, would have easily arranged for a little "accident" to befall his colleague if Heidegger ever made an attempt to "soil" his perfect son.