Tyson is, at the point in time this was written, thirty one. Damien Molony is only twenty eight.
This, admittedly slight, age gap is to make Tyson seem younger. To show how he has suppressed information. His brain has created a state of denial to protect him from the trauma he has endured which makes him seem younger, more innocent and naïve.
The age gap is three years, for a good reason: Tyson was with Sebastian for three years which means he had suppressed, almost, all of those three years making him seem three years younger than he actually is.
This, admittedly slight, age gap is to make Tyson seem younger. To show how he has suppressed information. His brain has created a state of denial to protect him from the trauma he has endured which makes him seem younger, more innocent and naïve.
The age gap is three years, for a good reason: Tyson was with Sebastian for three years which means he had suppressed, almost, all of those three years making him seem three years younger than he actually is.