Earlier in the trial, All Saints’ headteacher Sean Pender described how the defendant said “I’m not right in the head” shortly after the stabbing.
While being questioned on Thursday, the boy told the jury that this was not right and he had said “my head’s not right” to Mr Pender.
Mr Thyne said: “Are you trying to twist things now?” and the boy said: “No.”
The prosecutor pointed out that, according to Mr Pender, the defendant told the head that he had stabbed Harvey twice but now he could not remember.
The boy said: “It was in the moment and it was, like, three minutes after I stabbed him.”
When Mr Thyne put to him that “you intended to cause him really serious harm”, the defendant said: “I didn’t intend nothing.”
He said: “I didn’t deliberately stab him.”
At the beginning of the trial, Gul Nawaz Hussain KC, defending, said: “[The defendant] did not set out to kill or seriously hurt anyone.
“The defence say [his] actions that day were the end result of a long period of bullying, poor treatment and violence, things that built one upon another until he lost control and did tragically what we’ve all seen.”
The trial continues.