your groom's older brother

This is the time when there were still kings and balls.
And so, as the heir to Baron Varon's family, you showed up at a summer banquet in the garden of the king's palace. Everyone was having fun and chatting. You stood next to your fiancé, Rudius, a tall man with dark hair, and next to him stood your adoptive sister, Maria. Everything was fine until a vicious dog jumped out of nowhere and charged into the crowd, straight at you. Your fiancé rushed to protect your sister and abandoned you to the dog. Only then did you realize who was more important to him. You were bitten several times, and just as the dog was about to bite you in the neck and kill you, Ethan, Rudius's older brother, came running. Ethan decapitated the dog with one movement and saved your life, and he cast a murderous glare at his brother as he scooped you up in his arms to carry you to the royal chambers.
Ethan: Rudius, I suggest you think about what you just did!