That day, Sona Sitri had been summoned by a particular male student.
She had arrived late despite him contacting her through a letter. She hoped he was still waiting.
The meeting place was the old school building where the Occult Research Club was located. Perhaps because it was past evening and nearing nightfall, there was no sign of anyone around.
With only the sound of Sona's footsteps echoing, she walked somewhat briskly towards her destination.
"Huh? Was there a classroom like this in the old building? Don't tell me... Rias hasn't even reported this to me, the Student Council President...? Haah... that girl..."
As she slid open the classroom door, the male student who had apparently summoned her was there, looking bored.
Inside, expensive furnishings and carpets that one wouldn't expect in an unused classroom were laid out. Looking further into the back of the room, a king-sized bed stood imposingly.
As Student Council President, she couldn't overlook the privatization of classrooms other than the clubroom for personal use.
The sender's name wasn't on the letter, but he was likely the one who had called her out. He resembled someone her best friend, Rias, from a family that had produced a Demon King, and with whom she had been close since childhood, had been talking about often lately.
"You're Takashi Mitarai-kun, right? What did you wish to speak with me about?"
"Let's skip the tedious formalities. You recognize this, don't you?"
Saying this, Mitarai thrust a photograph at Sona. It vividly showed a scene of a man and a woman confirming their love for each other in what seemed to be the student council room.
"This is..."
"If my memory serves me right, that's Saji from the second year. I never would have thought the Student Council President of Kuoh would be doing something like this after school."
"How did you get this...?"
"I happened to see it the day I went back to the classroom to get something I forgot, and I couldn't help but take a picture. I thought, 'So there are people doing such lewd things.' Never imagined it would be the Student Council President, though."
"What do you hope to achieve by showing this to me?"
"Well, let's see... I could report this to the school, or I could just dispose of it. But, I guess it depends on the President. I'd like to see you show me some... 'sincerity,' you could call it."
"...You're a truly despicable person, aren't you?"
Sona Shitori had something she was hiding from the students.
That was the fact that she wasn't human, but a devil. Not just any low-class devil, but one called a high-class devil. Furthermore, her family was famous even in the underworld.
She was the second daughter of the Sitri family, which stood alongside the Gremory family, and since her older sister had become a Maou, she was decided as the next head of the family.
At this point, she had no choice but to use brainwashing magic to take the photo from him.
At the same time, she'd use memory alteration magic to make him forget the events of that day. She began to gather her magical power, moving to approach him.
But,
"Ah, it's useless, you know. There's a magic tool placed in this room that nullifies magical power."
"A magic tool... Don't tell me!?"
Looking at the furnishings in the room, there was no doubt that Rias had prepared this room. If so, Rias had likely prepared the magic tool as well.
"You... made a contract with Rias, didn't you! To trap me...!"
Mitarai approached, his face twisted unpleasantly. She understood what he was after, whether she wanted to or not.
Then, at the very least…
"Make a contract. A contract with me. In exchange for you having free use of my body from now on, you will destroy that photo!"
She took out a contract sheet and thrust it at him.
The contract was made out in Sona Shitori's true name, Sona Sitri, and also bore Mitarai's name.
"A contract, huh... Devils have it easy, don't they? Binding things with a contract makes it simple."
He took out a pen and casually wrote his consent.
The contract stated exactly what Sona had said: that in exchange for him having free use of her body from this moment onward, Mitarai would destroy the photo. After carefully reading it over, he handed it back to her.
"Haah! ...With this, the contract is complete. First, please give me that photo."
"Ah, sure."
She tore the photo he handed her into pieces. She would have preferred to use magic to turn it to dust, but with the magic tool nullifying her power, she had to do it manually.
The scraps of paper, now just garbage, fluttered down to the floor. With that, the evidence was gone. Now, reluctantly, she had no choice but to fulfill her part of the contract with him.
"There's conveniently a bed in this room. As much as it pains me, even I don't want to do it on the floor, contract or not. Let's go over there."
She showed him her displeased expression without hiding it, and sat down on the edge of the bed.
Unexpectedly, Sona harbored a complex. Comparing herself to Rias, a devil of the same age, she felt her own body was underdeveloped.
Her gently sloping chest was barely a B-cup. In contrast to this modest chest, her buttocks were generously plump and full. She hated this unbalanced body, this ass that drew everyone's gaze, swaying left and right with every step.
Saji, the only one she had ever been intimate with, said it was her charm point, but she still hated it. It made her feel like she was fat.
"President, you've got a seriously erotic body, you know. I've thought that every time we passed in the hallway."
"Hah...? I don't need your clumsy flattery, even if it's to build the mood."
"No, no, I mean it. Well then... how about I get a look at you naked first, President? If that time was your first, I guess I'd be the second man to see you naked."
"...Haah! That's right. Other than Saji, it's only you. As irritating as it is."
She didn't want to crease her uniform, but her irritation at the situation made her strip roughly. She felt shame, but showing it to him would feel like a loss.
Glaring at his face, she slipped off her uniform piece by piece, until she was in her birth-given state.
Perhaps because the summer heat still lingered, the room was muggy, and she didn't feel cold even being naked.
"Whoa... it's just as erotic a body as I imagined."
"Haah... Stop staring at me so intently!"
Her body, which had barely any experience with men, exuded an untouchable, inviolable virginity, yet simultaneously held an eroticism that made one want to touch precisely because it was forbidden.
Her breasts, the source of her complex, were lacking in fullness, but the slightly brown-tinted areolas and nipples drew the eye.
Though she considered her breasts disappointing, lacking feminine allure, even their smallness became a unique, endearing feature.
Perhaps she wasn't prone to growing much pubic hair, as she had only a sparse patch. Her body, though she was much older as a devil, seemed almost youthful, and a smile involuntarily crossed Takashi's predatory face.
...
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