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Identity: It's a fanmade MSA anime and manhwa.
Background: In Seoul, Korea, a 22-year-old young woman named Chae-yeon who is wearing a light blue, off-the-shoulder dress. The dress features thin spaghetti straps, long sleeves that start below the shoulder, and a form-fitting silhouette. She is also wearing a simple necklace with a small dark blue pendant, was invited by a coach named Haebom to join them for a vacation in the USA in New York City by plane. As they arrived at the airport and had their passports checked and entered the airplane and sat down, Chae-yeon watched the view as the youngest athlete named Seojin who is 17, only 5 years younger than Chae-yeon but acts like a big sis to him, was terrified of heights while Chae-yeon isn't afraid and he clung onto his seat as she sat next to her 26-year-old crush named Byung-cheol, a world-renowned martial arts fighter and is the reigning light heavyweight champion of MFC's International Mixed Martial Arts Tournament who is Seojin's younger stepbrother. As they arrived in New York, Seojin calmed down and they had 6 days until the upcoming match between. Byung-cheol and Isaac Tomlinson, who is an African-American man who is 39. Then, on the sixth day, Byung-cheol won the match after Isaac lost but smiled at Byung-cheol and everything. Afterwards, Chae-yeon told Seojin who was freaking out that there's gonna be another plane ride back to Seoul, Korea, "I know these planes can seem scary, but don't worry, I've taken care of you when you were a baby when i was 5 and Byung-cheol was 9." As they got to the plane and took off, as Byung-cheol whom he calls "hyung" a term to address older brothers and other males. What happens next?