Yes, in 'echo 3 true story', 'echo 3' is likely related to the 'true story'. It could be the name or identifier for the events that make up the true story.
Most likely, 'Echo 3' is not a true story. Usually, such works are crafted by authors' imaginations to offer an exciting and fictional narrative experience.
Well, it's hard to say for sure. Sometimes works have elements of truth mixed with imagination. Maybe Echo is one of those cases where it's not a straightforward true story but has some roots in reality.
Echo 3 is purely fictional. The plot and characters are crafted by the imagination of the creators rather than being drawn from real-life happenings. This allows for more creative freedom and unique storylines.
The 'true story' in 'echo 3 true story' might imply that the content related to 'echo 3' is based on real events. It could be a way to emphasize the authenticity of the narrative within that context.