Familiar Awakening

"That won't do. The demonic aura won't wait; it must be purified immediately," the man said. His sturdy body pinned the nun against the wall, kissing her while lifting one of her legs high up with one hand, fully exposing their intimate union to Elara.
The thick and grotesque member thrust into the nun's body repeatedly, each withdrawal bringing out glistening fluids, tainting the junction with a lascivious sheen. The nun's body was half-suspended in the air with no support, her legs spread wide as she was forced to endure the man's invasion, emitting uncontrollable moans with each thrust.
The intensely shocking scene nearly made Elara scream. She clapped her hand over her mouth and hurriedly retreated down the corridor, running past several turns and still unable to calm down for a long time.
Elara, a girl parasitized by an Inner Demon, was saved by the Priest, Noyce, and became his Familiar. At the Church's Witch Academy, Elara, weak in power, faced discrimination, but gradually grew under Noyce's strict training. However, she unexpectedly discovered that she was of the Light attribute, and this twist allowed her to shine in battles against monsters, ultimately guarding the peace of the magical continent with Noyce.
What strange experiences will Elara and the Priest Noyce have? What kind of monsters will they face?