“Drinks on the job and kills his trainees to toughen them up — the world's strongest human devil hunter, with his own code beneath the ruthlessness.”
He chose to strip out emotion and focus only on results — and he lives that choice. He teaches others not to love devils while refusing to let go of Quanxi himself. He acknowledges that contradiction. Knowing his own weakness precisely is why he tries to train it out of others. Ruthless, but principled. Brutal, but for a reason.