While on a mission as a top agent for the Information Guild, I was stabbed through the chest. I thought I had surely died, but... I've returned to my 8-year-old self, back in that hellish orphanage?! "Hi there, I'm Diana!" Suddenly, Diana, the youngest princess of the Elard Duchy, appears before me. To avoid repeating the regrets of my past life, I took care of Diana, intending to return her safely to Duke Elard, but... Did I do too good of a job? "Big sis, you're so pretty! My princess! I'll protect you forever!" Diana, who refuses to leave my side even for a moment, and "Am I such an unreliable adult to you?" "I clearly emphasized that a man's worth isn't just about his looks!" Not only the Duke of Elard and the second prince, who were said to be indifferent to anyone outside the family, "I told you not to leave my side without permission." Even the famously cold-hearted first prince is acting strange! I may have monopolized Diana's affection, But why is everyone so obsessed with me?