>>49203216At this point, the anime might start pushing Aureliashipping to shill more Lillie merch!
Lillie and Serena feel like the same archetype except Lillie is not a childhood friend and her crush isn't as blunt as Serena.
Lillie's advantage over Serena is her narrative relevance as an Ojou-sama who uses Aether Foundation to help Ash and provide him various resources. While Serena's advantage over Lillie is that she might develop more well endowed figure than Lille as an adult because of how their mother look.
However figure doesn't completely rely on mother's gene , it could be influenced by the gene from father's side. Chances are that Lillie might become well endowed like Wicke as an adult while inheriting her mother's youth.