This is the description of the music video. If you go back to all the JP or most of the JP title track mvs, they have a Japanese description. Here's the description for Kura Kura:
"Nine girls gathered on a quiet and peaceful holiday morning to start a girls talk about their love in front of a delicious brunch. They grow up at their own pace and fall in love with a special existence called "Kimi", and there are as many forms of swaying love as there are people, such as love that mourns parting and love that is full of endless happiness. All members express that in different situations. The emotions of the nine people rise like flowers bloom, and when they bloom, they break, making it a work that expresses [both] the light and darkness of love."
The initial and official short version of the explanation of Kura Kura was:
"'How one falls in love at first sight and plunges into a world where only the two of them exist.'"
With that being said, there's one comment that caught my eye the most, explaining how each girl portrayed love and there was a major twist:
love that is full of endless happiness
Nayeon - Fun and Carefree
Sana - Feels like everything's floating
Jihyo - Elegant and fun
Dahyun - Temptation (showed by grapes)
love that mourns parting
Jeongyeon - Feels trapped
Momo - Feels like burning, passion or toxic relationship
Mina - Feels like everything's crashing down/broken
Chaeyoung - Feels lonely or that everything's moving too fast (lightning)
Tzuyu - Feels like drowning
My theory is they all fall in love with the same person, as is said. But like the original description was, they were in a world where only the both of them exist. If you notice, when they had their own scenes or whatnot, they were alone. No other member except when they were dancing or in the brunch were together, pretty much the opposite of Feel Special. The world in this video was them describing how they felt about their love but in visual form. There actually was no "fantasy world," they were simply describing it to their friends and you were seeing and hearing their "words." That's why you can see Jihyo singing her words in front of the girls at the table.
As the description says, there was two parts of Kura Kura. One that was experiencing and explaining their best of their love (Nayeon, Sana, Jihyo, Dahyun), the others were explaining or mourning their parting ways (Jeongyeon, Momo, Mina, Chaeyoung, Tzuyu). For those mourning, it was the way they portrayed their breakup, not their current love. Everyone knows that Nayeon, Sana, Jihyo, and Dahyun's relationship will end up like those mourning, as the the description states at the end, but it just hasn't happened yet. They all grow up at their own pace as the description says so that supports my claim that they are all explaining their different stories and some relationships possibly started earlier and ended earlier than the others.
I've also noticed how every floral concept has different, deep and hidden meanings and messages. For More & More, they were there to symbolize an endless paradise and true happiness and light, before they ate the apple or forbidden fruit, that is and they were corrupted by darkness. For I Can't Stop Me, the flowers symbolized the blooming of a new Twice, a Twice that was succumbing to the darkness. In Kura Kura, they play a major role. This part of the description is probably all you need to figure it out: "The emotions of the nine people rise like flowers bloom, and when they bloom, they break, making it a work that expresses the light and darkness of love."
What do you guys think? Am I spot on or way off? Or am I somewhere in between?