I don't know if I should believe her or not, but one day Mina revealed the hidden message of Twice's one of popular MV, Signal. This is what she told to me, more less:

"Haeju, personally my favourite MV is Signal. Not just because it looks cool, but also because of the message behind it.

If you still remember the MV, the story is about us trying to give a love signal to a blue alien. Unfortunately that alien doesn't respond us back. The twist is the girls are aliens too. Aliens with the color of pink. Have you notice something yet? Yes!!! The COLORS play an important role here.

My biggest question while watching the video for the first time was 'WHY DOES THE BLUE ALIEN REJECT TWICE?'. And the answer is.....

Drum role please! (I chuckled when she said it)

It's because the blue alien is GAY! Yes, you hear it right. And Twice is, well, supposed to be gay too! You don't believe me? Okay, listen carefully to this explanation!

At the beginning of the MV we see Twice in a rainbow dress. That's mean we're started as gays. We even look gay (happy) about it! But one day a blue alien comes with his spaceship and flashes us with a blue light. And guess what happen next? Twice become interested with the blue alien. Twice becomes heteroual! And because Twice is not homo anymore, they change clothes to all blue. 

We can roughly say that BLUE represents MAN and  PINK represents WOMAN in that MV. When Twice wear blue, that means they're interested in men. And like I said, the blue alien is not interested to Twice because he wears a blue uniform too. He is interested in men as well!

To make it simple, skin colors represent GENDER and clothes represent PREFFERENCE.

If you watch the MV, after being ignored by the blue alien, Twice change the clothes to rainbow again. But Twice are still curious about him, eventhough the motivation is not love anymore. In the forest, we see the alien is looking for signals as well with his devices. Do you remember what's the color shown from his little TV? Oh you're right again. It's blue! So that means the blue alien is apparently looking for another blue alien. And why is it? ("Because he is gay?") YES!!!

Not so long after thay, finally a blue spaceship picks him up and leaves Twice alone. Twice then becomes gay again.THE END," Mina finished her theory with a big smile. "What do you think, Haeju?"

"So you are suggesting that Signal MV is about diversity on love??" I asked her.

She nodded. "It's obvious," Mina said.

"Do you really believe it that way??" I asked her again.

"Well, the question now is why I am telling you all of this. Actually I told you this theory just because of this one simple question I'm going to ask you. I really need to ask this before it's too late," Mina spoke seriously.

"Well, go on. What is it, Mina?"

She smirked. She held my hand and looked into my eyes deeply. Mina then whispered to me,"Haeju, are you really ready to become the part of us?"