Really, I do truly swear this ISN'T as short as it looks. It's the same amount of words as the last chapter…..but the paragraphs are longer and it LOOKS shorter.

I really, truly tried. I'm sorry. I'm….a little freaked out over moving to Texas. Anyone out there from said state that can reassure me?

Did I not make it clear that Trelawney died? In like, Chapter 3? Yes, I recall lots of blood and a dead Trelawney inhabiting Chapter 3. Oh well…..

Enjoy! And I do not (contrary to what the voices in my head tell me) own HP, YGO, or YYH.

The Divine Proportion of Chocolate

Hermione set down her books, wishing for the second time that day she hadn't taken so many classes apart from her friends. Obviously Divination was no longer an option – she had Muggle Studies her first day at the same time Ron and Harry had their first taste of the new Divination teacher – but one out of three classes together in an entire day wasn't enough to make them feel like close companions.

She'd noticed a rift beginning to form between them, even at the end of their fifth year. It wasn't a conscious effort on anyone's part; just the differences of times and spaces. Being in different dormitories, different classes, being aware of different inside jokes – it all made for a distance between them that, apparently, only she could see.

A sharp jab on the shoulder interrupted her silent soliloquy and brought her back to reality. A black-haired face looked inquisitively at her, and she scanned her brain for his name. Finally finding it, she nodded and acknowledged his presence. "Mokuba! I'm sorry, I didn't know you were there. This is your brother's class, isn't it?"

His purple eyes seemed to laugh at her. "Yeah. Glad to see your thoughts are back on Earth for our last class of the day. You were starting to scare me a little. You're taking Arithmancy too?"

She quickly nodded, frizzy hair bobbing. "I've been taking it since my third year – I really love it!"

Mokuba toyed with the Gryffindor tie at his neck with distaste, finally wrenching it off and throwing it in his nearby bag. As he undid the first few buttons of his shirt, he fixed Hermione with a serious look, beckoning with his finger as if revealing a secret. "Just promise me something, OK?"

"What?"

He whispered behind a concealing hand, looking uncannily like a five year old trapped in a teenager's body. "You won't be scared of my brother. Sing at him, laugh at him, whatever it takes – don't let him intimidate you. That's what he's going to do this first class; see the way the desks are set? This is a replica of his business board. Even the chairs – his is set to be comfortable and overbearing; it's higher than ours, see? Only by a few inches, though."

As Hermione looked around, she had to admit this was true. The head of the long table (built a bit like the House tables in the Great Hall) was furnished with comfortable chairs that spun, but each was a forbidding black color. The one obviously reserved for the elder Kaiba had been raised a few inches, and when the already tall professor sat in it, she guessed he'd be able to look down at anyone in his classroom. Students were edging away from the front, preferring seats in the back that would obviously be away from the cantankerous professor.

She set her shoulders in a determined stance and picked up her bag again. "Then we'll just have to impress him back, won't we?"

Mokuba grinned as he saw her settle into the chair at the left hand of the table's head, gesturing for Mokuba to take the right. She drew a hair tie out of her filled-to-bursting bag and wrapped her hair into a forbidding bun. Ron and Harry would have immediately commented she looked like a young McGonagall. Slapping a few traditional ball-point pens and a thick notebook onto the table, she reached under the chair for the lever that raised the height above that of the Professor's.

As the younger Kaiba brother seated himself, the classroom door slammed shut of it's own accord, making a few student yelp and jump to their seats. A quiet descended upon the class as Seto appeared ("Out of nowhere!" a few students would later swear.) and sat at the head of the table. A purple trenchcoat flared out from behind him before he sat, making an impressive figure. Piercing blue eyes scanned every face at the table, searching for students that would meet and hold his glare.

"Is anyone missing from this class?" A short pause which was responded to with stunned looks. "Nevermind – it doesn't matter. Anyone not in the classroom at this time will not attend my class for the rest of the year." He smiled slowly, seeing Mokuba and Hermione seated nearest to him and the lack of students for at least four chairs down the line.

"To work, then." Slender white fingers pressed a nearby panel on a laptop that rose from the underside of the table in a slick, fluid motion. A hologram appeared in the middle of the table, featuring a man with a thoughtful pose. "Who recognizes this man?"

A hand with manicured nails was elegantly raised at the foot of the table. Hermione squinted, then recognized the hand's owner as none other than Draco Malfoy, who shared the class with her since third year. His voice rang out in a clear, collected tone, "Leonardo da Vinci."

Seto nodded, pleased with the readiness of the answer. "Correct. Da Vinci is accredited to the discovery of the Divine Proportion, roughly equal to one-point-six-one-eight. Also called PHI, the Divine Proportion gives the shape of the entire Universe, and is can be found in the human body. The Great Masters, such as Leonardo da Vinci," he clicked another button, and an image of the Mona Lisa appeared, "Always used the Divine Proportion in their masterpieces. One can find the Golden Number in Mona Lisa's features, as the ratio between the height and the width of her face. Or vice-versa, as the ratio between the width and the height of her despondent face.

"Some think of the Golden Number as the Fibonacci series. In fact, the ratio of any two consecutive numbers in the Fibonacci series tends to approximate the Divine Proportion. The ratio will be equal to the Golden Number in a series with an infinite number of elements. It's the mathematical 'Stairway' to and from Heaven, from minus Infinite to plus Infinite, and infinitely vice versa. Not only did it lead to such a divine visual masterpiece, Mona Lisa, it also brought to life a recent Muggle audio masterpiece: Led Zeppelin's Stairway to Heaven. This is yet another reason I suggest you take Muggle Studies – the two can be incredibly linked. Muggle technologies indicate that the distance between the notes of Stairway to Heaven can be represented by the PHI golden number.

"The golden ratio was first studied by ancient mathematicians due to its frequent appearance in geometry. The golden ratio seems to have been understood and used in greatest depth by the Egyptians." Here, Mokuba smiled at his brother and a model of the Pyramid of Giza and a Sphinx showed on the holograms. "The discovery of irrational numbers, numbers which can only be precisely expressed as a ratio or a mixed number which includes a square root is usually attributed to Pythagoras or to Hippasus of Metapontum. Over the next few days, we will study this number – I want a report on my desk by next week, preferably in normal, Muggle pen. I don't see any practicality behind quills – neatness should never be sacrificed for tradition."

"Everyone, please select two partners and take a tape measurer from the front basket. We're going to explore PHI in human anatomy first. Take measurements of any part of your partners' bodies – as long as I don't have to send you to the headmaster for sexual harassment – and we'll catalogue which parts match up to PHI. Start with basic measurements such as the top of the head to the elbow versus the top of the head to the longest finger, then work your way to something more intricate. This sheet will show you starting points and outline your assignment." Papers appeared in front of each pupil, printed on blue paper with a dark black ink.

There was a rush to take partners who wouldn't offend each other, and in finality Hermione ended up with Mokuba and Draco as her associates. Draco and Hermione had long since reached an understanding in this class – as the top students, both acted civilly towards each other, working together as often as possible. Everything that happened in Arithmancy was never to be mentioned outside of class for fear of ruining a subject that both thoroughly enjoyed – the words 'mudblood' and 'bastard pureblood' never escaped either's mouths. They worked very well together, both seeing patterns and occasionally pointing out something the other didn't understand. It was Hermione's secret fear that Harry and Ron would discover her truce and hound her mercilessly for it, but the ruse had held together for three years and she didn't see it disintegrating anytime soon.

Mokuba mused over the paper in front of him, summing up the measurements already taken from Draco, who was currently being assaulted by the tape measurer moving with direction from Mokuba's wand. "Alright, we've got face length, face width, hip to floor – Draco, you prat, don't move – knee to floor, middle finger to elbow, middle finger to shoulder….does this remind anyone of Ollivanders? Hi Seto!"

Seto grimaced at the memory. "Please don't remind me of that horrid shop ever again. You've ruined the lesson for me, little brother." He smirked at Hermione. "He's a horrible little runt, I know, but do try to put up with him for my sake, Miss….?"

"Granger!" she squeaked, grabbing his hand immediately, though it had never been offered.. "My name's Hermione Granger. It's such an honor to meet you! And I hope it didn't ruin the lesson for you – it was ever so interesting and I don't think we've ever had anything this hands-on for Arithmancy…" Hermione's words flew out of her mouth at an alarming rate, leaving Draco staring at her as the measuring device flew around his ankles.

"That's….wonderful, Miss Granger," stated Seto slowly, as if to a small child. Mokuba discreetly kicked him in the shin to make his brother add a painful smile to the comment. "Though I must admit," he added, turning back to Mokuba and ruffling his younger sibling's hair, "I'm rather hurt that no one asked me to join their group. Teacher or no, I like to be included as anyone else." He pivoted on his heel and walked away to check on a second group's proceedings.

Mokuba smiled fondly as his brother paced away, his voice distant and thoughtful. "This place is so good for him. I wonder what effect it's having on the spirits…?"

Draco and Hermione quickly exchanged glances, and Hermione mouthed, "Spirits?" Draco shrugged in return, a curious look gracing his features.

As they left the classroom, many students noticed that the bottom of their assignment sheet stated, "The team that find the highest number of correlations will receive a generous amount of Honeyduke's best chocolate."

And Mokuba smiled.

Reviews

SamuraiDuck27 – I….actually don't know what they're planning yet. I'm horrible.

Kitsune Moon – I….don't know the answer to that either. The cards are mysterious, I guess, though a reason shall arise! And if they're not in a shonen-ai setting, they're not dating anyone, so feel free to admire from afar.

Dymond – Wait…they caught on fire? Oh dear, did I write that? (Sighs) Ah well….I'll work around it.

Kenmeishouri – Of course it's not a big deal….to a thief king.

Chelley Angel – No, you voted, I think. I'm sorry. I know it sucks.

Alex – Nope, no shonen-ai; we've already discussed this. And thank you ever so much!

Killah-Sama – Yes, well, I tend to view Harry as rather uncultured through no fault of his own.

Starlet36 – I….thought I made it clear she was dead in like, Chapter 3. Apparently not.

Ototo – Thank you.

The Raging Flame Moon – I don't feel sorry for him either, actually. He's pharaoh – he'll deal with it.

Akira Tosiyama – I'm sorry if I've offended you with swearing.

Darkdaisy – We'll see, m'dear, we'll see.

Crazy Hyper Lady – Alright, before you kill me, I'd like to say I started on Kurama's class, but was inspired by a friend on Seto's…..and just couldn't resist! I'm so sorry!

Rosedark – We all love him. He's the greatest! (Squees Bakura plushie)

Misawa Kaitou – Only time will tell, m'dear, only time will tell.

… - Thank you.

RainOwl – Authoress, actually. And I'm so glad you liked it!

Latin101 – Hooray and amen to that. Glad to see you got an account!