[Nakahara Dragon] The Piss-hydration Boy (Coloured)

A short‑haired athlete and a long‑haired counterpart find themselves locked in a tense, fluid‑filled contest after a mysterious water boy offers a drink. As the short‑haired participant struggles to control the sudden surge, the long‑haired rival protests, demanding her turn while the unseen male participant teases with a relentless stream. The scene escalates with desperate pleas and involuntary reactions, leaving the outcome of their provocative hydration challenge uncertain.