Only one... but it will take a few episodes. The lightbulb saga
You weren't there, man!
None. Social scientists do not change light bulbs they search for the root cause as to why the last one went out.
No IT guys change light bulbs, they just keep flicking the switch on and off again until something happens.
Well, line up so that I can find out..
Just one, but it lasts five episodes. And Kuririn dies.
He was a little... Possesive
Just 1, but It'll take 7 episodes for him to do it.