The background song is zero o'clock. That song means when the hand of the clock is in "00:00", your worries, pain, problems will fade away and new life with happiness will happen. You have to listen to that song so you can understand more what the story tells. They have lyrics videos on yt.
They have a song called whalien 52. It is dedicated to the loneliest whale in the world because of his/her 52 hertz. No other whales can hear her/his. That song is also beautiful. Thank you for your time and effort to reacting to this. 💜💜
BTS' music has literally saved lives. There are people who have contemplated suicide and then changed their minds after listening to their songs. Zero O'Clock, the song playing in the background, is probably one of them. If you read the lyrics, you'll see why.
As you check out more from BTS, you'll come to see the significance of Purple and whales. I'm glad you still enjoyed the video regardless. The song was called 00:00 (zero o'clock) by the way 💜
Better watch and react if you have not to Tiny Tan Magic Door. It is the first animation were the girl was working in a bakery or pastry shop but her dream was to be a pianist. And as always BTS creates mv's or videos with storyline or interconnected. To really appreciate this animation better watch Tiny Tan Magic Door to know as to why the title of this is Dream On. This is not definetly a mv for 0' Clock it just so happens that they used it as the appropriate song like after midnight is a new day and you can start again for a better day. By the way this is not a mv for 0'Clock its just so happen to be the appropriate song. Cheers.
The whale has a lot of significance in our fandom. Check out their song "Whalien 52" (lyric video, no mv for it). You'll see the whale again in BTS "Heartbeat" official MV. It's beautiful. 😭💜
That design is also BTS official logo, which they've also incorporated with Tiny TAN when the lights turned on to reveal the name. The beginning scene of this animation in that beautiful purple hue is the city of Seoul, capital of South Korea. This scene is also similar to an actual/real life shot of the beginning scene for JHope's solo song "Airplane" which you should totally check out if you haven't already ➡ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-8O_MwlZ2dEg.html 😁💜 You should also check out the song in this animation too called "Zero O'clock" aka 00:00 because the lyrics fit beautifully here. 💜
1:29 Other people already told you the name of the city in the comments. However, to be more specific, the name of the river in the scene is Han River, and the name of the tower in the distance is Namsan Tower.
It's too bad you reacted to this video first, they have a video prior this one it kinds starts with a story, this mv follows that story. The mv name is Magic Door.