Contract Object, a weapon where power and cost coexist.
The moment he donned the mask, Bologue felt its power, that fear which constantly spilled over, rising like mist, continually affecting everyone who gazed at him, much like the Secret Energy of the Void Spirit School.
Horror and dread took root in the depths of their hearts, growing wildly until their bodies burst, bleeding profusely.
The so-called cost also accompanied the power, the moment he put on the mask, strange hallucinations flashed before Bologue's eyes, countless sinister faces gazing at him, obscure and bizarre murmurs whispering beside his ears.
Facing all this, Bologue remained impassive; for an Undying, fear and strangeness had long lost their impact, let alone Bologue had that terrible experience in the Black Prison.
He had personally endured madness and hysteria, when you face Hell directly, so-called hallucinations are merely illusory.
But... is it really so?