Anthony Smith died Thursday afternoon, hours after being gunned down outside the Loki Lounge on King Street West, east of Portland Street. A second man was also injured in the shooting and sent to hospital.
Toronto police are still searching for suspects, and said Friday they have begun to interview the second victim about what happened.
Many of those who knew Smith came by the family home near Islington Avenue and Dixon Road over the past two days to pay their respects, the family says.
"He's a big part of the community," said a friend, Mohamed Sayed. "He's really going to be missed. He was a brother."
His sister, Kamelia Taylor, said that Smith was a Seneca College student and talented basketball player.
"Anthony brought nothing but joy, smiles," she told the CBC's Charlsie Agro.
A former basketball coach said that friends also gathered at the local court on Thursday night to remember Smith.
Abdifatah Warsame, a local youth worker and Smith's former basketball coach, said the 21-year-old wanted to be a youth worker himself.
Smith had been in trouble with the law before — he was known to police.
But Taylor says the robbery charge against her brother was dropped, and she has no idea why someone would want to hurt him.
His family is still trying to accept that he's gone, Taylor says.
"With his death, my family hasn't expected it," Taylor said. "We still look through the window hoping he's here."