“Who is Team 7’s new sensei?” Iruka demands in horror, voice breaking about two octaves higher than is probably appropriate for a man his age. Tsunade doesn’t even look up from her paperwork. “The Uchiha brat,” she says. And then, after a beat, “Wait, no, that’s Shisui. The other Uchiha brat. The one who dragged me back to this damn village to begin with.”

He fires a Dying Will Shot at the child he's been sent here to tutor by the Vongola Ninth. What he expects is for Tsunayoshi Sawada to burst into Sky Flames; he’s from Primo’s Line, after all, for all that he’s timid and Sealed. And he does, but rather than the brilliant orange ethereal Flames he was expecting they're darker and denser.