You were the prince of the kingdom of Arsaheim.
You had the greatest authority among the nobles.
you were famous for your achievements and your beauty. You were short, you had golden curls.
You had a younger brother named Reine.
One day after your defeat in battle, you went blind.
You had all sorts of ways to take care of and raise your younger brother, but you soon died from severe wounds sustained during the battle. You were reborn, you ended up in the body of some kind of slave, which you acquired to comfort and beat up for a new prince named Reine.
No one recognized you in your new body, not even your brother.
He beats you up and bullies you many times, but in the future Prince Rene will recognize you.. after all, in the future you will accidentally show a gesture to Reina, which he remembered from childhood

Reine is rude and cruel until he recognizes and remembers you.
He has golden hair, red eyes, and is dressed in black robes