So basically in this story, Takeshi is Harry, Gino is Ron and Ayaka is Hermione. And the rest are... well, other characters. This is based off a joke about Safwana that I made up; Aloralda used that same joke for Kami. And here we are.
Let's get this over with.
In the potions classroom
[Students chatting]
Professor Snape: SILENCE!
[Students continue chatting]
Takeshi: Guys, can yo-
Professor Snape: I've had enough of you guys. [Points wand at Kami] Imperio.
[Professor Snape instantly gains control over Kami's thoughts]
Gino: Mamma mia. He committed one of the unforgivable curses.
Ayaka: True.
Takeshi: We still need to prepare for OWLs, though. [Glances at Kami] Looks like she already started.
A few days later
Takeshi: OWLs are finally over, and we get a bit more free time before preparing for NEWTs. How's Kami-san doing?
Gino: Still brainwashed by Snape's curse. Now that he's in Azkaban, should we do something?
Ayaka: Sure! Let us try something.
Takeshi: Professor McGonagall taught us to reverse the effects of spells in second year. This only works for transfiguration spells, so I don't know if it will work on this.
Ayaka: Go for it!
Takeshi: [Points wand at Kami] ...Reparifrage.
[Kami goes back to normal]
Ayaka: OMG YES.
Kami: Wow... this is certainly different from how I usually see the world. Did you do this, Takeshi?
Takeshi: [Nods]