It was a warm day on the coast of South Korea. BTS had moved here to get away from the world. The piece was motivated by a deep secret. Three of them were mermen but unknown to three of them Hoseok was a half breed. 

"Hey guys, come down here I would like to talk to you about a few things." Jin called from his spot in the pool alongside Jimin and Jungkook. 

"We're coming Jin." Namjoon said. Jin was already in his merman form. He was thin and very weak. The pink scales of his tail that were once very radiant and showed like the ocean at Sunset were now flaking. Light patches of skin showed through in this area. It stood in blank contrast to the belly he held so dear as he was with child. His black hair was pink matching his tail. Jimin and Jungkook were also in their mermen form. Jimin supported a light blue tail that matched his now blue hair, while Jungkook supported a dark red tail that matched his red hair. The other four looked on in shock at Jin  knowing the very thing that had happened to him. They were outright shocked to see such a thing. But the other htwo that would love for the merfolk in their group simply smiled and watched as their bandmates gaped. The two began to laugh so that the others would be more at ease. However the others were too afraid to so much as speak given the situation.

"Guys we have something we need to talk about. I've taken ill in the only way I can get over it is to go home. To return to the Sea." Jin said solemnly as  Yoongi,  and Taehyung looked shocked.

"What about the baby?" Taehyung questioned

"We'll have to have her in Atlantis."
Namjoon replied calmly as he sat and put his feet into the water as Jin gently swam up to him resting his arms and head on his thighs. 

"Wait that exists?" Taehyung questioned as Jungkook and Jimin laughed shaking their heads

"That's where we're going pretty soon. You might want to get packing because we're leaving for the weekend." Jin replied. Once the weekend came,  they packed quickly and were in the car before they even knew it. It took them little time to get to the beach. Finally, they got into a boat and were out on the water within an hour. Each and everyone seem to be ready to go with the humans even bringing wetsuits. The merfolk among them laughed heartily.

"What's with the wetsuits guys?" Jin said laughing.

"Won't we have to dive? I mean it's Atlantis? Isn't that the famous city that's underwater." Taehyung said

"Oh my God that's hilarious. No you won't need diving suits. Hold on we'll show you." Jin replied as he carefully went into the water sprouting his pink tail. The other two merfolk jumped right into the sea taking they're true forms as soon as they hit the water. Hoseok hesitated but jumped in after a moment. He surfaced revealing a orange fishtail and orange hair. He simply smiled and beckoned to the rest.

"Come on in The water's fine" He replied brightly.

"Wait you're one of them?" Taehyung questioned as the other two were shocked.

"I'm a half breed." Hoseok replied calmly

"I'm so confused." Taehyung admitted.

"Basically my eomma was a mermaid while my appa was human." He explained as the other quickly understood.  The humans got into water rather quickly. Once they were in each merman kissed their partner. Suddenly each began to sprout a tail of their own. Namjoon grew a dark green tail as his hair changed to that same color, Yoongi's tail was a beautiful aqua blue as his hair matched and Taehyung's tail was a deep purple looking like the group's color as his hair also changed to that color. Ironically, none of this felt painful at all. In fact the sensation of flopping around like a fish was oddly pleasant. That's when they went to swim down.

"okay what was that?" Namjoon asked as he looked down at his tail then up at Jin who was smiling .

"One of the few actual magic left in the world it turns you into one of us." Jin replied softly.

"But only when we're in this form with you." Jimin concluded as they nodded in understandment. With that candid explanation they swim down deeper and deeper. Soon enough they came upon a glowing city in a bubble. They swam through the bubble into the square of Atlantis.