It might be the price paid for achieving extreme speed;
Roc Bird always felt that sometimes his brain wasn't quite up to par.
This wasn't a jest or insult from others, but a definite conclusion he drew himself.
Extreme speed, breaking the bounds of the Great Dao of Qiankun, ignoring the suppressions of the Avenue of Time, shattering the shackles of heaven and earth.
Whenever he used extreme speed, two tightly stretched films would appear before his eyes; once broken through, countless images from the past would uncontrollably surge toward him, flooding his own memories startling his mind.
Roc Bird had only encountered this feeling a few times inadvertently, and afterwards, he felt as if he had lost something.
'That must be the limit of speed I can endure.'
His elder brother said, if he used that kind of extreme speed beyond the critical point a few more times, he might become an idiot.