* FanonDiscontinuity: There is no American remake. There is no American remake. There is no American remake.
** There is no ''Windstruck''. There is no ''Windstruck''. There is no ''Windstruck''.
* EpilepticTrees: There's a theory that [[spoiler: the old man the girl meets under the Tree of Destiny]] is a time-travelling [[spoiler: Gyeon-woo]].
** Not as epileptic as it may sound - in the DVD commentary, [[WordOfGod the director]] has stated so much that it ''is'' a time-traveling Gyeon-woo. Notice the "UFO" that takes off at the end of that scene.
* SpiritualSuccessor: ''Windstruck''. Cha Tae-hyun even makes a cameo experience at the end, saving Jeon Ji-hyun's character from the subway once again.