They watched as the professor teaching them, in the space of a single instant-
His body, originally around three meters tall, instantly became a dark monster over a hundred meters high.
Pitch-black demonic markings covered him from head to toe.
From within to without, then from without to within.
He constantly radiated a dark presence that seemed to evoke an inexplicable attraction and revulsion toward all living things.
Those feelings welled up unbidden in the hearts of everyone present.
"Actually, your teacher here is a member of the Demon Race too."
He instantly transformed from his humanoid guise into his Heavenly Demon form-a Heavenly Demon King, strictly speaking, a Fourth Tier Primordial Origin Golden Immortal cultivator.
The associate professor opened his bloody maw, and suffocating demonic qi instantly enveloped the entire classroom condensed from a small thousand world!
Only Qinghen, who was human but cultivated demonic nature as a demon cultivator, along with the Asura Tribe and Demon Race students-the former already belonging to the demonic fold-could remain unruffled.
As for the remaining students-
Although they were the pride of their races, peerless geniuses whose combat prowess towered above everyone their age-
And every one of them had cultivation above the golden immortal realm.
Several had even reached Early Taiyi Golden Immortal, or even the middle and late stages!
But in truth-
Even though they frequently encountered teachers, grandfathers, and other powerful figures at the primordial origin golden immortal level-
Those encounters always happened while those elders were restraining themselves somewhat.
They could never truly experience that intimidating power.
But this professor in the classroom was different.
Although he was an associate professor, his strength was only at the fourth tier of primordial origin golden immortals, and he had no special techniques-
The power he unleashed now-
Was the genuine