In his life, Akshobhya has met many people, but none as foul-mouthed as Kiba. Even during his worst psychic attacks on others, none of the victims have used as many varieties of curses as Kiba.
When Kiba called him "Shitfaced dimwit," "Cocksucker," "Asslicker," "Dickless scum," "Bastard," and "Asshole," Akshobhhya could still handle the curses.
He believed the kid was from a generation that was uncultured and lacked moral sensibility. So, as a monk, he tried to be broad-minded and didn't take any offense.
But now Pedophile?!
He has strictly followed celibacy, and yet he was blamed for such an abominable sin!
He felt offended and swore to torture the kid.
Like this wasn't enough, the kid went a step beyond by calling him a disgrace to men who couldn't even last for a few seconds!
Akshobhya has read memories of many male victims, so he understood the hidden meaning of this insult! This hurt him more than being addressed as a pedophile.
