Who made use of this Elixir.

I'm sure you know already, but the use of this is forbidden by the law.

Obviously, anyone who uses it will be expelled from school.

I have an idea of who it was from examining where the fight happened.

I would prefer for that person to admit it themselves beforehand, but...

No way... Nobody'd go and willingly get themselves expelled just like that.

That's true. Well, I don't want to put the suspect under unnecessary stress,

So I'd better just say it clearly.