You are not in my world, but I love you.
Su Yang went from being ignorant to feeling such feelings, from wanting to get closer to feeling sad when he saw him go away.
They are together and have always existed in this world, but they can never be together and have never entered the same world.
The man was a pebble that accidentally broke into the lake, bit by bit, and shook up the calm lake, allowing Su Yang to find a world of redemption.
Maybe we are not together, but we can have the same beliefs.
Maybe our beliefs are different, but we can still be together.