"If we're not from the same world, I'll find you, my Hae Soo." 

A miserable love from Goryeo.

An example of an everlasting love.

"If we had met in another world and at another time,I was thinking how great that would be.I that happens,I will not fear anything"

A love from another time and another place but bonded with hearts.

Would that love continue if they fall out from the same sky?