So I took a gander at chapter 78.
By the old ones. I thought nothing that happened to Sumire could top what happened in chapter 75. That nothing could be worse (read, better) than that.
I was wrong.
So very, very wrong!
I looked up the raw for chapter 75 of すみれちゃん
SatomiU sensei is a public menace and one that should NOT be stopped.
Dear God, it looks like Sumire's intervention is going to be a medical one.