It undoubtedly took a while, but in the end, Sunset had managed to track down not only her friends, but the other Siren sisters, Adagio and Sonata. Once gathered, the girls all followed the former unicorn to a small, and currently unused, classroom. As soon as they were all inside, Sunset closed the door behind them, making sure to check the hallway beforehand, just in case there was anybody who could listen in on them. With the door firmly shut, she turned to her friends, of whom, Applejack spoke first, folding her arms as she did so.

"Okay, Sunset, ya got us here. Now, what exactly is goin on that ya couldn't wait ta tell us?"

Sunset let out a sigh, looking to each of her friends before finally starting to explain things.

"This problem of ours...it might actually be worse than I thought."

To that, Rainbow nodded.

"Yeah, you said as much before. But how can it be worse?"

Slowly, Sunset turned to Adagio and her sisters, staring at them briefly before looking back to the group as a whole.

"I think...that we may not be the only ones going through heat right now."

And that caught Adagio's interest immediately, causing her to raise an eyebrow as she added her own voice to the mix.

"Sunset, dear...are you trying to suggest that the three of us..."

With one hand, she gestured to herself, Sonata and Aria.

"...are in heat like the rest of you?"

Sunset nodded.

"I am. According to Aria, she's already started displaying traits that are typical with those in the middle of an intense heat period. A lack of inhibitions, some aggressiveness, you name it."

Placing a hand on her hip, Adagio looked to her middle sister, who tried desperately to avoid looking back at her, before regarding Sunset once more.

"Far be it from me to question the scientist amongst us...but in case you'd forgotten, my sisters and I don't have Equestrian magic. You and your friends saw to that, remember?"

Again, Sunset nodded.

"I do remember. But even so, you did have it. And, more importantly, you went through the same physical transformation as the rest of US. The ears, the wings, all of it. The details might have been different, but it was the same kind of change."

Looking away from them, Sunset let out a sigh.

"Your exposure to Equestrian magic may have been brief, but I think it was substantial enough to cause you to have a heat cycle like the rest of us."

A pause followed her words, and the other girls all looked to the Sirens, with their expressions ranging from sympathy to concern. As for the three sisters themselves, they were, needless to say, quite shocked by the whole thing, looking to one another as if they had no idea what to do now. After a long and rather uncomfortable silence, it was Sonata who finally broke it, looking to her eldest sister with hope in her eyes.

"But...we'll get through this...right, Dagi?"

Adagio said nothing, instead turning to Sunset once more. The look on the face of the latter made it clear that things were not going to be as easy as Sonata was apparently hoping for, and it led Adagio to let out a long sigh before turning to her in earnest, placing a hand upon her shoulder.

"Sonata...it'll be difficult, at least for now. It's been a long time since any of us have gone through this. Centuries in fact."

Briefly, the eldest Siren let out a chuckle.

"Say what you will about being stuck in human form. But at least it kept us from having to deal with this sort of thing every year."

To that, the Sirens all enjoyed a moment of laughter together, one that even Sunset felt the need to join in on. As for the fully human girls, they regarded this with some incredulity, eventually settling on turning to each other and affording themselves an "I-guess-you-had-to-be-there" sort of expression. When the laughter finally died down, Adagio swept some of her hair aside before looking back to Sunset, who spoke up to her.

"To be honest, Adagio, I'm surprised you didn't notice this kind of thing."

To that, Adagio shrugged her shoulders.

"Me? We're talking about a near-constant desire for physical intimacy and satisfaction. I have that every day, remember?"

Staring at her for a moment, Sunset soon let out a sigh and placed her hand upon her forehead.

"Right. Forgot who I was talking to."

Smirking, Adagio gave a nod before speaking up again.

"Well then. I trust you do at least have some good news to give us?"

Sunset sighed and shrugged her shoulders.

"Honestly, it's up to Princess Twilight at this point. All we can do is wait for her to send the needed plants over. As for our side of things, we'll just keep things under control between us, either until she comes through for us, or until this heat period passes."

Looking to her friend, Rarity frowned somewhat before speaking up.

"Darling, are you sure that's all we can do?"

Sunset gave a morose nod.

"I'm afraid so."

To say the mood was glum would have been a bit of an understatement, as each of the girls looked to one another without any hint of confidence or assuredness. Not even Pinkie Pie was her usual bubbly self at this point. It was the kind of mood where a distraction, any distraction, would have been welcome. Fortunately for the girls, said distraction now arrived, as the door to the room suddenly opened. The group turned in unison towards it, seeing none other than Flash Sentry. The boy, upon entering, seemed confused by this large gathering of girls, only to turn to Sunset with a smile upon his face.

"Well, job's done. I got around and spread the message as quietly as I could. The guys here at CHS won't be bothering you girls while this is going on."

Hearing that, Sunset breathed a sigh of relief, holding her hand to her chest as she did so.

"Oh! Thank you, Flash! Believe me, we were in serious need of some good news right now."

Flash nodded to that, after which he turned, only now noticing that the three Sirens were here. Confusion crossed his face once more as he looked from them, to Sunset, then back to them, before finally settling on Sunset.

"So...what's up this time?"

Folding her arms, Sunset let out another sigh.

"Adagio and her sister are in heat too."

Flash stared at her for a few moments before slowly turning to the three in question. Adagio placed her hands upon her hips and gave the boy a nod, confirming what Sunset had just said, leading to him letting out a sigh of his own.

"I...I was only gone for ten minutes!"

Sunset nodded in agreement, clearly sharing the boy's sense of exasperation. After yet another silence between them, Flash turned to his ex again before speaking up.

"So, how did that happen?"

Sunset turned to him and gave him his answer.

"Remember the Battle of the Bands? Them taking our magic and transforming? That's how."

Hearing that, Flash rolled his eyes somewhat.

"Honestly...that Equestrian magic should come with a surgeon-general's warning or something. Be warned, continued use of this magic may cause heat."

The deadpan manner in which he'd spoken that caused a number of girls, and even the Sirens, to giggle somewhat, which admittedly did a lot to lighten the mood everyone had been suffering through. But, as they laughed together, Flash stopped for a moment. It took a while, but he soon developed into an expression of clear thoughtfulness, one that Sunset soon noted. Gradually, and after much thinking, Flash then morphed into a look of slight concern, turning to Sunset and speaking in a worried tone.

"Um...Sunset? You say that exposure to Equestrian magic is what changed you girls?"

Needless to say, Sunset was taken aback by that question, but after thinking it over, she gave him a nod, prompting Flash to continue.

"So...so this kind of thing could happen to anyone that's exposed to it?"

Again, Sunset nodded, but this time, she spoke up.

"I...I suppose so, yes. Why?"

Upon being asked that question, Flash looked away slightly, bearing a look that Sunset knew well. It was the kind of look one wore when they were about to say something that they knew was going to cause concern. But, eventually, the boy got his words out.

"It's just...if what you say is true...then...wouldn't that mean that all the girls here would be going through this?"

As expected, those words caused a complete silence in the room, with all eyes on Flash. The looks on everybody's faces made it clear that they were hoping that he was joking about this, but one look at him, and they knew that this was not the case. After staring at him for some time, Sunset finally spoke.

"Flash...what are you talking about?"

Raising a hand, Flash nervously scratched the back of his head, before finally responding to Sunset's question.

"Well...it's just...remember the Fall Formal? When you used Twilight's crown? You used Equestrian magic on everybody, hypnotizing them and stuff."

Sunset's eyes widened upon hearing that, but, before she got the chance to respond to it, Flash then turned to Adagio and her sisters.

"And later, at the Battle of the Bands, you three did the same thing, using your song magic, or whatever it was, to enchant the entire crowd before going through your transformation."

Like Sunset, the Sirens were taken aback by those words, looking to each other with dumbfounded looks. Looking back to Sunset, Flash spoke up again, with his tone one of worry.

"Would...would that kind of exposure be enough to...you know...put the girls here through what all of you are going through?"

Sunset froze upon hearing that, staring at Flash as he continued to wait for an answer. In time, she turned to the rest of her friends, all of whom were giving her similar looks. She opened her mouth, but no answer came, for she had none to give. Instead, and after much silence, she instead looked over to a window on the far side of the room. Without saying anything, she rushed over, looking out onto the school campus. She scoured the place, looking at student after student, paying particular attention to the girls. It wasn't long before her fears were confirmed. For everywhere she looked, the girl students of the school were either flirting with the guys, or giving them amorous looks as they passed by. Never before had she seen this much clear interest between the sexes at this school, and it was a state of affairs that caused her to turn once more to her friends.

"Okay...I think it might be time to go to the principal about this."