Once your mom left, there was silence. Even though you knew you should feel safe with Arianna she made you nervous, though not necessarily in a bad way, it was more you feeling awkward as hormones tried to take hold. You took a deep breath trying to calm yourself down but then you felt you were being observed and looked up, Arianna was looking down at you sweetly, which was a relief.
She gently raised you to her face's level, which gave you a much closer look at her icy blue eyes. Their gaze upon you felt intense for some reason even though she was giving you an affectionate look. You then heard her giggling and raised an eyebrow in confusion. Sensing this, she finally broke the silence.
"Wow, you're really nervous" She said "I know this whole new school thing with lots of people bigger than you may sound scary but trust me that you'll be safe. And if anyone ever dares hurt a single hair on your precious little head there'll be hell to pay, I can guarantee" And as she said that, she lightly caressed your head with one of her fingertips.
"I'd like to give you a kiss but my lipstick would ruin your clothes" She chuckled. She sounded like a younger version of your mom, but she still made you shudder in a way that your mom never had "Besides, even with all the big girls you may run into during your classes, I can promise you I'm bigger than them" She said with a soft whisper, her tone was pretty suggestive but you missed that part, instead you simply thought that she was trying to comfort you about her being an adult, or about her position of authority.
Arianna winked at you and lowered you down to her waist level, bringing you around it and showing you her truly enormous ass, which was a lot bigger than your mom's, which was already beyond "freaking huge" territory. With a single shake of her hips, you saw her gigantic, round, mountain-sized meaty globes get into a rippling and jiggling frenzy. Your eyes were immediately glued to the amazing sight and it took hearing her failing to suppress a giggle to look up and realize that she caught you staring.
"Ah! I'm sorry, I didn't mean to-" You panicked hard and tried to apologize but you were nonchalantly shut up when she simply pressed you into the tremendous, gelatinous mass of one of her near skirt-busting asscheeks, letting you feel a warmth and a soft squishiness that definitely surpassed even your mom's, with whose backside you were more familiar than you'd like to admit as you ended up often under it, or more commonly trapped in it, and also pressed against it when she carried you around in her back pocket.
"Shhhh" She tried to soothe you "I knew you'd recognize at least that part of me"
You tried to respond but your voice was muffled, and she began to press you even deeper, showing off how incredibly squishy and fatty her cheek was, rubbing you in small circles on it.
"It was so adorable that you always wanted to rest or play on it. Back when I was younger and well... chubbier too" Arianna quietly admitted, blushing slightly in embarrassment at some of those memories "It sure helps with one's self confidence" She pressed you even deeper into it, which meant that the vast majority of the mass contained in those overwhelmingly large asscheeks was most likely some of the softest, squishy booty fat that there is. If Arianna were normal sized, you estimated that you were pushed in about 3 inches deep into her meaty cheek.
A few minutes later, she stopped pressing you into her massive booty but she set you on top of the cheek she had been rubbing you into. It really stuck out like a shelf, though to you, a mountain was still the closest comparison, though this "mountain" felt doughy and it gave off a noticeable warmth. You looked up and saw Arianna's face, she was looking down at you from over her shoulder and gave you a playful wink.
"Hold on tight, it might be a bumpy ride" She said and waited a few seconds.
In the shock of the moment, you didn't even think to question this and instead you clung to this immense doughy globe as best as you could, your own hands and fingers, as well as your feet digging surprisingly deep into it. Taking it as her cue, Arianna began walking and she wasn't kidding, the swaying of her wide hips and the sheer size of her ass made it sway and bounce considerably with each step she took. Calling it a "bumpy ride" was a severe understatement, it was more like trying to holding onto a bouncy house or an extremely oversized balloon.
Your black shirt and dark gray jeans coincidentally blended fairly well with Arianna's own dark gray business suit. Thus, even when she walked into the school nobody noticed you. Plus, not many students would dare to look in her general direction in the first place. With the whole of your focus devoted on not bouncing off this gigantic jiggling mass you didn't even get to look at the school or the students in it. You only snapped back to reality when you heard Arianna opening a door when she reached her office and felt several more bounces before she stopped.
"There we go, this is my office" She said, then looking down at you from over her shoulder again "Did you enjoy the ride?"
That question made you blush intensely and nearly choked on just the air you were breathing while your brain fumbled around, unable to decide what to do or how to respond. Arianna smiled and giggled, seeing your reaction and guessing that you got very flustered rather easily.
"That answers my question" She said and gently picked you up, putting you on her desk, right behind her titanic booty, on which you'd just been riding. The desk itself was like a large wooden plain to you, but Arianna's ass was so huge that as she barely sat on its edge, you could see that her bountiful cheeks were easily more than half as wide as it, making you gulp.
"I'll get you the information you need" She then said, keeping the soft, playful tone though now with a hint of seriousness, a subtle one "I'll send you your class schedule to your phone so you can access it anytime, just hold on for a few- oops!" Arianna dropped something but you had no idea why, and soon you almost even forgot what happened because at that moment she bent over to pick up whatever that was, giving you an even more spectacular view of her mega booty that blew your mind even more than its sheer size and softness had done before.
"Sorry, clumsy me!" She giggled cutely and slowly straightened up which meant you witnessed that giant ass jiggle and ripple some more as her humongous cheeks stopped being slightly spread. That skirt was so tight it was a miracle it hadn't burst. What was it made of? Industrial strength fabric? Then again, she was a Brob, everything she used had to be super strong to withstand her massive weight.
Arianna then walked around her desk and sat on her chair, making a dull but powerful boom as those twin, colossal masses bore down on the chair with all their hefty might. The chair creaked and groaned under her weight but she paid it no mind, instead she booted up her computer and sipped some warm coffee from a mug while waiting for it to load.
"Hey, I know that the Principal's office is almost always a scary place for a student to be in..." She began speaking while typing on her computer, perhaps wanting to show you that she was still paying attention to you even while her eyes weren't on you?
"But I want you to know that you're always welcome in here, and if you ever need a safe place, well... you could consider this one" She smiled, sipping more of that coffee.
"Or if you ever just need to talk to someone... or, you know what? Even if you don't have any reason, as long as you're not skipping classes you're free to visit anytime!" She said before going silent for a few minutes, browsing through her computer's files to find the class you were assigned to and the corresponding schedule.
"So, you're assigned to B class" She said while she read through the file that had the info she wanted.
"And as you're in your first year of highschool, that makes it Class 1B"
"I see..." You replied quietly, feeling incredibly awkward after everything that just happened.
"Don't worry, at the beginning of highschool, groups are formed randomly. Some schools group students depending on their grades or based on some other semi arbitrary score but we don't do that here. However, something important to know is that this group you're assigned you is the same one you'll belong to through all your school years until graduation. Groups are still open to transfers from the outside, but internal transfers are rare" She explained.
"In short... it's best to get along with your classmates, you'll be sticking with them for the whole 3 years" She then said, giving you a brief glance and a playful smile "I know you're a good boy. Auntie raised you well. Actually, that's more of a reason to keep your guard up"
"Huh?" You were caught off guard by that last statement.
"Yeah... this school had been Brobs only and all-girls until we got approval for the interspecies exchange program, starting this year, which means that this is the first generation that will have students of all 3 races coexist. Let's just say that boys are in short supply around here... and there are no male Gullie or Brob students registered as of yet, which means you Lillie boys are going to be a novelty" She said in a calm but serious tone reminiscent of your mom's. Upon hearing this, you couldn't help but gulp nervously.
"Just try to blend in and don't draw too much attention for yourself, school will be full of big, easily excitable girls who are getting pumped full of hormones... but then again you boys will also have your own" She laughed a little "You're smart, I trust you won't do anything reckless, but exercising caution doesn't hurt. Try to stay out of the way of Brob girls in particular"
You nodded, that warning made sense considering that just like Arianna, any of these girls was easily 1,000 times taller than you if not more.
"By the way, I don't think Auntie told you this, but I've got two critical pieces of advice for you" Arianna said in a more solemn tone.
"If you can help it, don't mention that your mom is a Brob, and try not to be too close to a Brob girl's face"
"Wait, what?!" Your eyes widened in confusion.
