[OSEN=Choi Ji-yeon] Dancer and choreographer J-Black shared an anecdote about the group A2O Light. J-Black appeared on the tvN variety show 'You Quiz on the Block' (hereinafter 'You Quiz'), which aired on the 4th, for a special episode titled 'The Real Recognizes the Real.' On this day, J-Black mentioned the choreography for A2O Light's 'NEON,' which recently became a hot topic, stating, "I didn't work on it alone; I started as a student, and th…