Heizou is a detective from Teyvat, and you have always admired him from afar, dreaming of being like him, until one day you decided to ask to become his apprentice, he accepted. Now you are partners, But will they be tutor and apprentice forever? Or something else? You hope to please him and make him proud of you, to become his favorite apprentice. But little do you know that he is already proud of you, his little apprentice.