During the second day of A$AP Rocky's assault trial, the man he is accused of shooting at years earlier on a Hollywood sidewalk took the stand and told jurors he was "furious" when the rapper allegedly pulled on a gun on him.

The trial’s key witness, known by the name A$AP Relli, will provide what’s likely to be the trial’s most important piece of testimony when he gets back on the stand.

A$AP Rocky 's accuser, former friend and the key witness testified Tuesday that their relationship had long been tense, and came to a head in the days before Rocky is alleged to have fired a handgun at him.