3:04 Alear clearly didn't understand what she meant there. She was saying that when you have a long life you forget some parts of your life including the people they met. If he lives for 1000+ years from now on he will forget some part as well, that's what she meant when she said "you'll be me".
It’s worth mentioning it’s right around the time that she form the four hounds even before sombron and Alear killed each other rumor spread that they’ve been killing a bunch of mercenary’s on top, the best of the best mercenary kind of like jeralt’s mercenaries in fire emblem warriors three hopes 500 years before they met veyle prior to meeting veyle goal was to secure a piece of elyios because she had no idea how to use her powers because little does she know that she created the corrupted.
It felt good to finally put her down after calling lumera a beast messing with veyle's personality and for killing marni she had it coming for a long time
What are you on about fire emblem has always reuse bosses it's better then being a generic enemy General with a generic Sprite and only two lines of dialogue that barely gives you any character