Gang Enrollment (3) (ギャング入門 その③ Gyangu Nyūmon Sono 3), originally I'm Sinking! (もうすぐ沈む！ Mō Sugu Shizumu!) in the WSJ release, is the four hundred fifty-second chapter of the JoJo's Bizarre Adventure manga. It is also the thirteenth chapter of Vento Aureo.
Black Sabbath, the automatic Stand of Polpo, has grabbed Giorno's Gold Experience, and is attempting to pierce it with the Arrow. Even though Black Sabbath is stronger, Gold Experience successfully grabs the Arrow, and after a series of punches, knocks the enemy away into the shadows. Black Sabbath vanishes, reappearing in Giorno's shadow, and once again attempts to pierce Gold Experience with the Arrow.
Giorno falls into a sunlit area, and Black Sabbath is unable to follow. Giorno realizes that the Stand is unable to move under sunlight, but with the sun starting to set, deduces that he doesn't have much time before all of Naples becomes Black Sabbath's playground.