Dorobune Kizoku no Goreijou - Osanai Otouto wo Musuko to Gisoushi, Ringoku de Shibutoku Ikinokoru!

Graciela Mendoza was sentenced to death. After her father's death, Graciela, the eldest daughter of a ducal family, was tricked by her uncle into taking over the family home, and was then accused of the crime and decapitated along with her young brother. However, she finds herself back where she was five years ago...?　For the second time in her life, she will never make a mistake again. Even if I have to disguise my younger brother as my son, I will survive stubbornly.