Choi Yeonjun Share definition Flag he is the 4th gen it boy. legendary dancer, singer, actor, rapper, producer and much more. he is also a very healing comfort person. "wow it's Choi Yeonjun! did you see his amazing dance today?" Choi Yeonjun by thepersonwhoonlyknowsfacts February 16, 2021 Get the Choi Yeonjun mug.