A collar II

“Put these on.” Said Luna and handed Ginny a pair of spectrespecs.
She herself already wears one.
Ginny took the glasses and looked at them.
She sees them before, Luna wears them occasionally.
But Ginny didn't understand why she gave them to her now.
“Quickly put them on, she just came outside.”
Luna rushed Ginny and pointed to the castle entrance.
Ginny noticed Nevill and behind him Hermione.
Luna was paying attention to them, so Ginny just shrugged and put the glasses on.
And immediately understand why Luna wanted her to wear them.
She was looking at Neville and Hermione.
But to Ginny's surprise, Hermione was naked.
She took the glasses off and put them on.
Just to assure herself she is seeing what she was seeing.
Apparently Hermione was wearing that collar they secretly provided.
And thanks to the glasses, Ginny could see through the illusion.
She could see Hermione standing naked outside.
And people were walking past her and didn't react to her nudity.
Because for them, she was wearing clothes.
“She looks so sexy.” Luna whispered to herself and didn't move her eyes from Hermione.
Who started to walk behind Neville.
“Wait, so everyone with these glasses can see her?” Ginny asked.
“Not with every pair. I enchanted these two," Luna explained, “but the illusion doesn't work in reflection.”
“You mean that if Hermione stands in front of a mirror people could see her naked in it.”
Wanted Ginny to know.
Luna noded.
“She looks nervous,” Ginny noticed.
“I bet she is.” Luna smiled.
“But she is aroused too. She likes it.”
“How do you know?” Ginny asked.
“Trust me. I know. You should try it too. You would look so sexy wearing the collar and only a collar."
Luna taunted Ginny.
Before she could say something, Luna slapped her on the ass.
“Let's go, they are almost at the stadium.”
Ginny yelped, the slap wasn't strong and through her clothes it didn't have the same effect as a slap on bare butt.
But the action and Luna's remark makes Ginny think for a second about it.
She blushed and quickly banished the thought then followed Luna to the stadium.

When Neville and Hermione step outside the castle, Hermione stopped for a second.
When the warm air and sunbeam touched her skin she was overwhelmed for a second.
Standing naked outside, it wasn't her first time.
But now there ware people all around, yet nobody was paying attention to her.
Thanks to a magic collar she was wearing, everyone looking at her could see her wearing her school uniform.
Which was an illusion casted by the collar.
Hermione managed to compose herself and followed Neville to a quidditch stadium.
He, as everyone else, was oblivious to Hermione's nudity.
As they crossed the courtyard, Hermione still occasionally looked around.
Expecting someone to see through the illusion.
That constant dread mixed with stimulation from air and sun touching her skin, started to arouse her.
The last time she orgasmed was three days ago.
When Emily played with her in the perfect bathroom.
And then Emily forbade Hermione to orgasm without her.
So naturally she started to feel it.
Hermione started to have real trouble keeping her hands on her side.
Even with the illusion spell she was sure it would look weird if she started touching herself.
So she continued walking and almost ran into Neville, who suddenly stopped.
Hermione gasped when her front touched Neville's back.
The sensation of the clothes touching her naked skin startled her.
Neville looked over his shoulder at her.
“Sorry.” He said.
Hermione looked in front of him and understood why he stopped so suddenly.
The entrance to the stadium was clogged with students.
It looks like the whole school decided to enter through this one entrance.
As she watched the crowd, more students stopped behind them.
And they started to push on people in front of them.
Hermione was enveloped by people's bodies.
Leaning on her, pushing her.
“What are you doing?!Move!” Yelled someone from behind.
“We are trying.” Answered another student from the front.
Meanwhile, Hermione was touched by people around her.
Most of the touches were unintentional but one or two students took their chance and groped her.
She almost moaned when two hands squeezed her buttcheeks.
For the culprits it felt as if they grabbed her through her skirt.
But for her she felt their hands on her bare butt.
She was so squeezed between the people she couldn't even turn to see who was touching her.
She only heard quiet laughing from behind her.
The crowd slowly moved.
But Hermione was still sandwiched between Neville and people behind her, the mass of bodies carried her away.
She tried to focus on what was happening around, but outside occasional yelp when someone stepped on someone else's foot.
She could only hear.
“Sorry.”
“Hey look where are you going. “
“Can you move.”
After what felt like fifteen minutes they managed to enter the stadium.
And people started to sort into different directions.
The hand on Hermione's butt disappeared.
Hermione wanted to see who was touching her but when she turned around there was no way to say who it was.
There were just too many people moving in any direction.
“Ms Granger.”
Hermione turned and stood before Professor McGoangall.
“Are you feeling well?” The professor asked, “you look flushed?”
Hermione took a few seconds to answer.
“No, I am alright.”
McGonagall looked over at her with a keen eye.
Hermione felt as if the Professor was trying to look into her soul.
Or better look through an illusion spell.
Hermione nervously touches the collar again.
And even if she felt it, she had no way to tell if it worked.
“Hermione, here you are.”
Suddenly Ginny's voice cut the awkward silence.
“Professor McGonagall. “ Ginny greeted her and stood next to Hermione.
McGonagall looked at her and nodded.
“Ms. Weasley”
“Ms.Lovegood. “ McGonagall acknowledged Luna who appeared on the other side of Hermione.
“Professor. “ Luna nodded.
“Ladies can you keep an eye on Ms.Granger.“
Before Hermione could say something. Luna and Ginny said in unison.
“Of course.”
And then took her hands to theirs and just stood there.
Waiting for McGonagall reactions.
She just nodded and left the three stands there.
Hermione looked at the girls.
It surprised her that both of them were wearing Luna's spectrespecs.
Obnoxiously colorful glasses, which according to Luna's claims helps people to see Wrakcspurt. Or some other nonexisting animals Luna believes in.
But why Ginny would wear them she didn't understand.
But before she could think about it, they started to lead her into the bleachers.
Hermione felt really exposed as the girls held her hands.
When they ascend to their places. Girls let Hermione's hands go and lean on the railing.
Hermione did too and then the match started.
But before Hermione could start to watch it.
Someone stood behind her.
Really close behind her, she could feel the robes ' fabric on her bare butt.
She wanted to turn around but the person standing behind leaned to her ear and said.
“Eyes upfront.”
Hermione froze, the voice, she recognized it immediately.
It was that wizard who caught her in a slightly compromising situation in Hogsmeade back alley.
“I am so glad I finally found you. My slut.”
The wizard continued whispering.
Hermione gulped, a slight shiver ran through her body.
The wizard put his hands at the railing next to Hermione's.
Effectively trapping her between it and his body.
“Oh btw, I like your collar.”
He whispered and Hermione felt as if a cold hand squeezed her guts.
He knew.
She looked at Ginny and then Luna, what if they heard him.
But both girls look preoccupied by the game.
It looks like they even moved slightly to the side as if they wanted to give the wizard more space.
He must know what she was thinking because he said.
“Don't worry about your friends. I put a privacy charm on us. For now it's just us.”
As he said it he couped Hermione's left buttcheek and gently squeezed.
His other hand fondled her right boob.
Hermione couldn't control herself and moaned.
Her reaction makes him laugh.
“You really are slut.” He said with smile.
And continued fondling her.