Vento Aureo - Chapter 14 
Giorno must come up with a way to defeat Black Sabbath before the sun sets. Koichi suddenly appears, questioning Giorno about the old man Black Sabbath killed. Koichi, who was standing in the shadows, gets attacked by Black Sabbath, but to protect Koichi, Gold Experience has his hand pierced by the Arrow.
Giorno then turns the nearby railing into vines, getting rid of the shadow and forcing Black Sabbath to flee. Koichi, recognizing the Arrow, explains its Stand giving abilities, along with how automatic Stands work. At that moment, Black Sabbath, using the shadows of birds flying by, reaches Giorno and grabs him.