I admitt, I real do not know if the video, the lyrics or the song itself is the source of seduction. Maybe, each of them.
It is a seductive song first for honest, clear and precise perspective about life.
Second, for resurrection of memories of viewer , from old sentimental relations to the lost of presumed love of life to the simple decision to end a significant page of life.
In same measure, the reflection of childhood and teen period are more than inspired.
Yes, indeed, Kygo has the precious virtue to remind, in fair manner, old , significant things.
And this is the secret ingredient, delicious spice transforming his songs in special forms of revelation about yourself.