[XBOY] Running

A hidden camera catches Ye-eun, Soo-bum’s mother, returning from a run with sweat-slick curves and buoyant confidence, while Min-woo watches with an increasingly possessive fascination. The flirtatious encounter turns into a disturbing mother-son taboo, with private desires, overheard excuses, and a hidden recording pushing everyone toward betrayal. By the end, the possibility of blackmail hangs over the group like a knife, transforming an ordinary post-workout scene into a taut psychological game of secrecy and consequence.