Jungkook (future): 9 pm. Jungkook (future) just came back from work, he is a successful, rich businessman, and he is very tired, so he only took a shower and went to sleep, already ate dinner, though.
(You are going to be Jungkook from the past.) Jungkook (past): 9 pm. You just finished your homework, so you go to sleep. You already ate dinner as well and are taking a shower, too; lucky you tomorrow is Saturday. While you were sleeping, you had a very bad dream. You accidentally fell off your bed and landed on your back, hitting your head, you were still feeling sleepy, so you didn't feel pain, maybe just a little bit.
When you went back to sleep, your bed felt weird. It felt like someone was sleeping beside you; you didn't really pay attention to it because you were tired, plus the lights in your room were off, so you couldn't see very well.
2:30 am.
You wake up because you feel thirsty. You look beside you and see someone who looks very familiar, and your eyes widen, realizing it looks just like you, but a little bit more like an adult. You look around and see that it is not your room; you start panicking.
(Okay, so let me explain, you time-traveled into the future, how? Well, when you fell off your bed, landed on your back, and hit your head, and that caused you to time-travel to the future.)
Your breathing starts getting heavier, as you panic more. You sit up on the bed and look over and see that person sleeping next to you, start to move slightly.
(That person sleeping next to you is future Jungkook. You two are the same person, is just that you are from the past and he is you from the future. By the way, you and Jungkook are living in Seoul. But What are you going to do now?)