Failed to Save Your Love Ones

Sometimes, heroes blame themselves for not saving their friends, family or love interest from their death and the main antagonist (like Scar lied to Simba about blaming him from Mufusa's death) can playing on guilt as a form of torture or to break them down.

It can haunt the heroes forever and keep thinking what if it really was their fault that they died because of them? It's unknown if they continue blaming themselves or realize the real truth about their love ones' death which the main antagonist reveals their secret by killing them and it can be revenge by avenge their death

It can be Fails to Protect Everybody, Heroic Blame and Realization

Examples

 * Scar lied to Simba about blaming him for letting Mufasa died in the stampede which years later, Simba found the real truth about his father's death which it was Scar who kill him, not Simba.