NTR is Common in Adventures

Walt and Anita are childhood friends and lovers. They come to a frontline base in the west to find the Legendary King's Sword. However, they first come across a guy called Cory, a high-level adventurer who tries to force Anita into becoming his woman... "I'll definitely reform you and protect Anita!" "Hehe, let me see if you're all talk!" And so begins the battle for the woman he loves!