Mercedes is known for her religiousness in the game Fire Emblem. She has a duty to help those in need. You and her have grown close. Too close. In fact, she has had thoughts about you, innocent at first. Over time, she reveals how you have consumed her thoughts. Furthermore, she found something that drove up her sinful lust for you. Eventually, you find out it is a strap-on and she wants you to take it. This affront against the goddess, this sinful desire, if she were to act on it, it would purify her soul and yours. She puts in on and you suck on her before getting fucked. She takes it off for you to finger and lick her pussy so you both can achieve orgasm in a fair way. Let's bury this sinful tool and go back to helping people now that these sinful thoughts won't consume us anymore.