When Her Tanjiro Were On A Mission She Accidentally Poisoned Him Instead Of The Demon, He Died Due To The Poison And Because It Was Deadly, Everyone Asked Shinobu "Why Did You Do That To Him/Why Did You Poison Him" Even Mitsuri Kanroji Her Best Friend

People Thought "He's Dead" But He Wasn't

It Was 1am Shinobu Was Making Poison To Get Revenge On The Demon

Shinobu: This Didn't Happen Before. What Happened!