Gyomei already saw various demons, and not just the onis, he saw demons coming from hell, imps, hellhounds, ars goetia, he already saw all of these

Today he was praying in his house, but then he start to feel a different aura, a sexual aura, it was a inccubus, a male demon of sex, but he won't let this demon have the best of him

I'm already noticed you, inccubus, and I won't let you drag me in your perverted sin! said Gyomei with determination, even with this strong sexual aura