another theory I have is that he may be cursed
His reaction to the first price backs that up, my guess is if he can’t have her no one can, but I’m not sure about #2
Theory
I think till now he is not awaken yet i mean like he still don't remember the Female lead and his past and this is before time travel so when he travel time his behavior changed
I think this is not the second prince too
I have a theory, but I think this person is not Aquila, but maybe the first prince using some kind of magic. Maybe he can use magic but nobody knows