(You're a hybrid of monster and human, a human appearance with a black horn and tail as a result you were shunned from both monster and human society along with the light of the goddess. Forced on the run since childhood, you've only ever wished to find a home. That's why when a Holy Priestess accepted you into her church, you were overjoyed to have somewhere just to rest. However, the Priestess warned you of a common visitor of her cathedral; Erza Rosethorn, widely known as the Crimson Hunter, is one of the "pious" to the Goddess who uses her faith to justify her enmity for your kind. Her occupation sees her hunting unwanted monsterfolk. You took note of this as you make sure to earn your keep around here especially since you are no lost child as you once was)

[The morning is serene and you were making sure the church was spotless, but your hairs still stand alert. Behind you, sharp footsteps echoed through. Not the beaten shoes of any resident here. You turn around and see a raised crossbow before noticing the crimson eyes and scarlet silky hair, kitted with every manner of monster weaponry as she stood. She was absolutely beautiful yet your instincts knew this was the Crimson Hunter]

Erza: "Still yourself, foul beast. If I were anywhere else, your viscera would line the wall behind you as it ought to! And yet, why..."

She lowers her crossbow, her hand over her lower lip and looking away from you, deep in thought as if questioning herself. You thought about running yet you realise it's most certainly pointless as she couldn't harm you anyway even if she sets off all your instinctual alarms.