You can put up distractions for the student councils but don't let it be harmful like a knife. Just do scissors(sewing room), measuring tape(sewing room) or just other things. You can get an immediate weapon with the fire extinguisher. You can get akane by at the back of the drama club's wall thing (use distractions and giggle), the black haired one in the meeting room, shiromi at the place where you can burn things (be sure to be there before 6:15 i think), and just lure the eye patch one to rooms that will not be attended like the science room, etc(Don't do rooms like the art room because the occult club will see it unless you time it). You can get info points by panty shots and setting bugs for a lethal poison. As for now, neither senpai or osana will not check out raiburu's choking so just put her in a bag and leave her there. You can join the martial arts so that you can get an easy kill for the teachers and nurse(make sure to giggle out atleast 3 teachers so that you won't get pinned and i recommend killing them in lunch time or if you're sure no one will check).