Izuku Midorya is living his father(aka All for One) ever since his mom died when he was ten. But his father's not who he expected him to be. Because he's the king of Hell! Deku works for his father, making contracts with humans, when he's assigned a peculiar job involving UA student Shoto Todoroki. Enji Todoroki made a deal with the Devil(aka AfO), fifteen years ago. However he's failed to pay them back and Satan's starting to get impatient. If Enji doesn't uphold his side of the deal, he'll take the soul of his son Shoto Todoroki. Deku is in charge of monitoring Shoto and the Todoroki household. But his mission is compromised when he's confronted by none other then Todoroki himself! Will his personal feelings get in the way of his job, or will he ignore them and leave Shoto to the mercy of fate. PS: One for All doesn't exist in this AU and so All Might just has super strength. TW: Light swearing; descriptions of immense physical pain; mentions of abuse; yelling/fighting; violence I don't write smut Disclaimer: BNHA does not belong to me. I own nothing but the plot. I also own none of the art.