A teenager who saw his Army cadet friend stabbed to death in a gang attack plans to help carry his coffin.
Callum Naden, 17, was stabbed twice when the gang chased him and 16-year-old Joseph Lappin outside a youth club in Everton, Liverpool, last week.
Callum survived stab wounds that an inch either side would have killed him, but Joseph died shortly afterwards.
Callum's parents Kenny and Tracy Naden said their son would bear "emotional scars for a long time".
They said Callum, who has been friends with Joseph since nursery, is determined to be a pall bearer at Joseph's funeral.
Mrs Naden, 46, appealed to anyone who knew the identity of the killers who struck at the Shrewsbury House Youth Club on 20 October to speak to police.
She said: "It's difficult to come to terms with what happened last week when Joseph was murdered and our son Callum was badly injured in that sickening attack.
"Callum is recovering but it could have been very different - we could also have lost our son."
She added: "We feel very lucky that Callum is doing well but we also feel terrible for Joseph's family.
"We can't bear to think about what life would be like if we had lost our son.
"Callum has known Joseph since they were at nursery school together and he has lost one of his best friends.
"Callum and Joseph did not deserve this. What happened that night is horrifying - they were just two teenage boys who were enjoying a night at the youth club."
Mr Naden, 47, said Joseph's death had not sunk in yet for Callum who remains quiet.
He said: "Gone are the days of a couple of smacks in a fight. But why use knives, why kill someone like that?
"I've tried to put myself in Callum's position, looking up at those lads seeing what Joseph saw and it's just terrible.
"Part of my brain has switched off - it's just too painful."
Merseyside Police have bailed several people on suspicion of murder and attempted murder but nobody has yet been charged.