A sportsman who likes to make a sartorial splash, Moussa is the MVP of Milanese street style in his own right. Majoring in robotics engineering at a local polytechnic, the 6-foot-4 basketball player cuts a cool and commanding figure.

Both on and off the “campetto” (court)—in brightly hued basics that blur the line between indoors and out.

In leafy Parco Sempione, where a legend named Kobe Bryant once played hoops, the 19-year-old French rap fanatic is always on fire—flexing his always-on-fleek uniform of cover-ups, cargo chinos and cotton shirts for a swarm of curious spectators. But this baller has much better things to do than bait a crowd. Moussa marches to the beat of his own drum, followers be damned.