"Reveal yourself immediately."
Snape suddenly raised his magic wand in the direction where Ian was hiding and cast a magic spell. Instantly, Ian, who was under the Illusionary Body Spell, exposed his little dark feet.
In the blink of an eye, his entire body appeared in Snape's line of sight.
"Huh?"
Ian looked baffled.
"Seems like you're deliberately reminding me; I should enforce your detention punishment." Snape gritted his teeth and grabbed Ian's collar with a swift motion.
"How did you know I was there! I used the Illusionary Body Spell!" Ian was speechless. It was understandable that Dumbledore could sense him, but how could he not hide from Snape?
Was this still an Illusionary Body Spell?
It might as well be called the Full-of-Flaws Spell!
"At least Quirrell and the soul on him didn't discover you." Snape apparently had known about Quirrell's secret, but he chose not to expose it earlier.
"So, you can see through the Illusionary Body Spell?"
Ian cared only about this.
"No."
Snape replied concisely.
"I figured you wouldn't stay out of trouble this afternoon, so I sprayed some potion on you earlier. And sure enough, you tried to meddle in matters you shouldn't be involved with again."
Snape watched Ian sniffing around, even raising his arm to smell his armpits, causing Snape's eyelid to twitch. "Stop looking; if it were easy for you to smell, I wouldn't use it on a sly little thing like you. Do you think I'm one of those foolish pharmacists at Saint Mangos Magic Injury Hospital?"
Who knows why he had to diss those innocent folks at the magic hospital.
"How long will it last?" Ian got no response from Snape and realized he was being dragged towards the storeroom, giving him a bad feeling.
"You wouldn't really make me clean the toilets now, would you?"
Ian tried to use his pitiable demeanor to earn Snape's sympathy, but the Slytherin headmaster showed him what true indifference looked like.
"That's the punishment you've never completed."
Snape directly found a set of janitor's clothing in the storeroom and dressed Ian in it, like dressing a doll, and then shoved a mop and plunger into his hands.
"It's sleeping time! You won't grow tall if you don't sleep!" Ian was still hoping to avoid cleaning the toilet, but discovered Snape had immediately cast a spell on his magic wand.
"You've blocked my wand's casting ability?"
Ian's eyes widened. "Quirrell will catch and kill me! You know how much he hates me! He and the guy on his backside will turn me into little wizard jerky!"
His words caught Snape slightly off guard.
"On his backside..."
This might be something Snape hadn't discovered.
"Casting spells is a right every wizard should enjoy! You can't deprive me of my rights! I need to find Dumbledore!" Ian's shouting immediately made Snape's eyelid twitch wildly.
"You uneducated fool, can't you learn something other than the Dark Arts? I've only cast a little trick on your magic wand to perceive if you're casting spells!" Snape genuinely thought Ian was a bit biased; able to make Fiery Fire so terrifying yet lacked understanding of this fourth-year knowledge.
"Alright..."
Ian's voice weakened, though he was still rather discontent. He had chased Voldemort all around the Forbidden Forest this afternoon, yet now he was a mere Hogwarts cleaner.
"I've done great things for Hogwarts, I've... almost shed blood for Hogwarts." His rebuttal, clearly, did not gain Snape's approval.
"By morning, I want all toilets spotless, or I'll severely punish your friends." Snape believed he found Ian's weakness.
However.
"Not punishing me? That's great news!"
Ian joyfully threw away the tools he held.
"??????"
This time it was Snape's turn to be stunned; he thought he understood Ian fairly well, yet Ian's reaction was worlds apart from what he'd imagined.
Watching Ian preparing to sprint away.
"You still have money with me, which I'm supposed to send back to your shabby orphanage during Christmas." Snape, quick on his feet, finally made Ian stop.
"You've got me!"
Ian grumbled as he picked up the tools. He began cleaning the toilets under Snape's supervision, though it wasn't dirty, as little wizards sometimes used a Scouring Charm before using the toilet.
It's mainly mopping the floors and cleaning those sinks and faucets that was especially troublesome, given the hard water quality in the United Kingdom; some less frequently used toilets accumulated a lot of gray-white sediment.
If magic were allowed, a simple wave could solve it, but Ian was finally experiencing the frustrations of being unable to use magic, cleaning two toilets under Snape's supervision.
"Speed up."
Snape perhaps thought Ian had resigned to his fate; he left to sleep once Ian was cleaning the second-floor restroom, where Ian indeed was dutifully cleaning a broken toilet.
Commonly used toilets didn't need much cleaning; it was these broken ones that were the real hassle, especially when there was a ghost inside.
"It's a boy! This is the girls' bathroom!" The crying Myrtle was startled by Ian's cleaning noise; she floated out from the stall and screamed in shame.