While Aster and Rya were flying towards their bed, Rya couldn't help but remember Lilia's previous appearance.
Aster always tells the girls he loves them all the same, and she believes him because she has seen him giving the same amount of love to each of them, the way they prefer it, Lilia likes passionate sex, Alice likes to be dominated, Aria loves to be tenderly spoiled and Sarina enjoys tending to him like a young though inexperienced wife.
In other words, each one of them have their own thing and their ways to express love and Aster always responds in kind, but it is also true and all the girls know, that he and Lilia share a really deep bond.
Maybe because they are mother and son, maybe because Lilia was the first woman Aster fell in love with, but it's a known thing.
