Kwame's death was but a part of a poisonous and senseless feud between two rival gangs of youths in south London.
He added that Kwame was not a member of either gang. He had been to a recording studio in the area.
Kwame was stabbed repeatedly in the back and received a total of 14 wounds while walking in Adelaide Close with a friend.
The killers tried to get away by going into a side road where the friend's aunt lived, but the aunt was not home and they were trapped in a cul de sac.
More top news
A rapist has been given three life sentences for a vicious attack on an 81-year-old woman minutes after he sat next to her on a bus.
When he was starting out Anthony Joshua accidentally broke his coach's wrist — and Sean Murphy still has the scars to prove it.
The verdict stemmed from ugly scenes which marred the Capital One third-round tie at Selhurst Park in September 2015.