"Frieren is slow. It's boring. Nothing happens."
That's the point. It's intentional. The entire premise is that the great hero's quest is over and now you get to see the legacy of that quest in both the world and the people involved. It's meant to be introspective.
The fact that kit church has always loved lily flowers right from the beginning even before he met lili or so to say it has always been in and around him .And then he met lily in person, fell in love and happily ever after is something that was his destiny
~Love through a prism~