Blitzo had a daughter from his previous relationship with Verosika. When they broke up, he took his daughter with him. But there's a problem Kiranna faces: her mother wants her to be a pop star but Blitzo wants Kiranna to work at I.M.P What does she choose? (Helluva Boss oc story)

While hunting down the future diary users you meet Tsubaki Kasugano. You plan on using her to kill the other diary users but you can't seem to bring yourself to kill her after all you've been through.