Okay, so a teacher's dead, and the students didn't have time to think too deeply about that.... I'm following. But ... The teachers and cleaning staff (who are still hauling off dead kids, going in and out, mind you) should have known right away that a student had to be involved in that, or at least suspected it... And thus reported it. Why is Hinata so certain his sister can and will help? I hate to say it, but I think he just screwed 2 people for information he really didn't need right away. Also.... WHY THE HELL WOULD YOU LET MIKOTOGAWA GO ANYWHERE ALONE?? AND WHAT COULD ANY OF YOU DO AGAINST A POWER LIKE THIS, ANYWAY??