Aki: Hehe... didn't guess that many would review this story's summary! But all of those reviews made me happy and glad! Thanks a lot guys! I think one of you got the idea how Sou-kun looks young! Anyways, I just wanna tell you that this story was inspired by Nathalie-sensei, our Physics teacher, when she was teaching us about the formula. I was planning to post this story last June but... (looks around) I'm too lazy and I wasn't really into posting fics that time. ' Hehe... So much for my chit-chat! Here's the chapter!

And by the way, just think that this is like a sequel of the other stories where Sou-kun is living with the Oni gang. And they're having a vacation at the Kamiya residence. Nyways, this is just the prologue!


E equals mc²


prologue


"Come on, Seta-kun!"

A voice coming from a certain house pleaded as the sun warmly gave off sunrays towards the said house. It was early morning but the place was already noisy because of the people staying there.

"But..." A young brunette smiled warily with a big sweat drop on his head after the two older lasses neared him. "I really don't kno---!"

He abruptly moved back seeing those two glared at him. Much more sweat came running down on his head.

"Then how come you don't look like your age?!" The one with her hair long demanded.

"O-Omasu-san... I..."

"Look so handsome and young." The other girl, her black hair tied in a bun, finished for him. "Yah, we know that. Now tell us your secret behind it."

"I don't have any secrets, Okon-san..." The lad named Soujiro said with a twitched smile running across his lips.

"I can't believe your so selfish, Seta Soujiro!!!" Omasu over-dramatically exclaimed, pointing blamefully to Soujiro. "We thought you were giving and selfless and unselfish and gallant and all!!"

"But we were aaalllll wrong!" Okon cried with a fake stream of tears. "You wouldn't even share your secrets on how to look young and beautiful and attractive...!"

By now, the two were strangling the poor ex-Tenken to their full power.

"Ara... X-x"

The other people around them sweat dropped.

"Give the squirt a break." The tall brown haired lad stated, a fish bone hanging between his lips.

"Sanosuke's right!" A younger boy agreed as he practiced swinging his wooden sword in the grounds. "You're just envious because you look old and ugly." He continued commenting, unaware of two pairs of blazing, fiery eyes glaring at his back. "Just like Kaoru, you all look like old haggard witches with---"

Kaoru, Omasu and Okon cut him off by giving him three crunchy and crispy punches on the head.

"Yahiko-kun, I think that's really mean..." The red haired man sitting by the door commented with a big sweat drop on his head.

"Ahahaha!" A lass with braided hair laughed, having her back at the other three ladies. "Look at me!" She faced the trio and flung her hair artistically backwards. "I don't need to know such beauty secrets and ways and products just to appear beautiful!! I am naturally beautiful!"

The rest of the group sweat dropped with their heads down.

"Don't you mean, naturally beautiful as a weasel?" Sanosuke teased, only to receive a hard blow.

Soujiro sat up arranging his clothes after being 'tormented' by the two Oni gang members; his forever-present smile hung yanked.

"I thought we were going to visit some place?" The brunette asked, utterly changing the subject.

"Oh yeah." Yahiko replied after he remembered something. He immediately halted his practice and glanced at Kaoru. "I'm going to Daigoro-kun with Misao and Seta."

"To Daigoro-kun?" Kaoru got her normal aura now and was looking at Yahiko with a quizzical face. "What are you going to do there?"

"I'll return the book I borrowed then we will borrow another set."

"You guys are becoming bookworms." Sanosuke remarked with a grin on his face.

"At least we know how to read!" Yahiko shot back. "Not like some stupid fellow around here who only knows how to whine!"

"Well good for you." The Sagara boy smirked. "At least you know how to describe yourself and admit your bad characteristics!"

"Why you---!" He was about to jump on Sanosuke but Misao stopped him from doing so.

"Stop your bellyaching and let's hit the road!" The leader of the Oni gang said as she pulled Yahiko's gi and motioned Soujiro to come in suit. The young lad followed her, doing his best not to get Omasu's and Okon's attention, who were both busy talking with each other.

"Doesn't anyone of you want to go with us?" Yahiko asked, moving his gaze to Kenshin.

"I'm sorry, Yahiko-kun." The former rurouni shook his head with an apologetic smile. "I still need to do the laundry."

"In other words," Kaoru snickered in with a dangerous tone. "You're blaming me because I asked you to do the laundry!"

"N-no...! Kaoru-dono..." Kenshin told her, his eyebrow twitching in fear. "I didn't mean that way..."

"I'll go." Sanosuke uttered in a very calm voice that made the others look at him. "I'm bored here." He reasoned out and walked near Yahiko, Misao and Soujiro.

"Fine." Misao said as the four of them started heading out the Kamiya residence (with Soujiro hiding from Okon and Omasu beside Misao). "If no one else is coming, then we will---"

"HOLD IT YOU SMILING FACE!!!!" The two other members of Oni gang shouted making the former assassin tense up and hide behind Misao.

"We're not going to let you escape without telling us the reason behind your good looks!!!" Okon took out kunais out of nowhere and in a second replaced her casual suit with her ninja outfit. Omasu did the same and both of them stood on their stance.

The others found themselves falling on the ground anime-ishly.

"We will make you talk even if it meant... physical..." Omasu found herself speaking with the wind after Soujiro, out of the blue, used his Shukuchi and vanished into thin air with Misao, leaving Sano and Yahiko standing there. "...damage..." She finished, straightening up.

There was silence among the group for a while before Kenshin broke it.

"Guess Soujiro-kun's technique hasn't rusted off." He said scratching his cheek with a finger.

"WHY DO YOU ALWAYS HAVE TO USE SHUKUCHI?!?!?!?!!?!?!?" Okon cried as she raked her hands down on her hair.

"That ahou!" Yahiko exclaimed angrily. "Does he even know where Daigoro-kun's house is?!"

"Jeez. You girls pretty scared him." Sanosuke narrowed his eyes lamely at the two ninjas. "You should have faced him during the battle with Shishio."

"Shut up!" The two chorused.

"Hehe..." was the only thing Kaoru could mutter.


"Hoo..."

The ex-tenken sighed as he appeared somewhere near the lake where no person other than them was present.

"I see... lights..."

"Huh?" He averted his icy blue eyes down to the figure he was carrying only to see Misao completely dizzy. Her eyes were swirling round and round anime-ishly.

"Ara... Misao-san, a-are you alright...?" Soujiro asked placing Misao down on a stooped log nearby. Just then, Misao's eyes turned into a pair of blazing and blistering orbs, which made Soujiro's smile twitch.

"SOU-KUN NO BAKA!!!" The angry Oni gang leader yelled at the same time that she hit Soujiro's head... hard.

Soujiro fell on the ground unconscious. X-x"

Misao cooled herself down after beating her companion. She heaved a loud sigh and looked back at Soujiro who already gained consciousness and was already sitting.

"I never thought that that technique of yours could be that damn fast!" She exclaimed as she recalled the feeling when Sou used his Shukuchi to get on this place from the Kamiya's house within a matter of seconds.

"I'll take that as a compliment, Misao-kun." Soujiro said placing his usual smile back.

"Hmph." The girl grunted. "How are you supposed to find Daigoro-kun's house?"

"We'll wait for them to find us." Soujiro answered.

"No, we're going back." Misao argued.

"Okon-san and Omasu-san will kill me." Seta replied, dead panned.

"If you're not gonna agree with me, I'll kill you before they do."

"That's threatening."

"No, that's a warning."

"Same difference, Misao-kun."

"Are you testing my patience?"

"Uh... no."

"Then let's go."

"To Daigoro-kun's house?"

"Back to the Kamiya dojo, baka!"

"Okon-san and Omasu-san are there."

This time, Misao didn't answer, she sent a menacing glare towards Soujiro that completely said 'I-don't-care-if-you-are-the-ex-tenken-or-not-but-I-will-ruin-that-smiling-face-of-yours-then-kill-you-if-you-are-still-gonna-argue-with-me.'

"Ara..." Soujiro muttered. "I'm not allowed to use my Shukuchi, right?"

"Certainly." Misao stated as she walked to the bridge, trying to know where they were. "Because if you do that, you'll find yourself as good as a dead meat."

Soujiro sweat dropped then followed Misao.

"Where on Japan did you bring me?!" Misao asked, demanding the answer from Soujiro right away after noticing the unfamiliar place.

"Uh... A kilometer away from the Kamiya dojo?"

A moment later, Seta Soujiro found himself lying on the ground with a big lump on his head.


Aki: Er... I know that this prologue contained much more Sou torturing than the explanation you guys are looking for. I'm really sorry I cut it here but I really need to do this because this is just the prologue... The main chapter is the next one. And I promise to update it by Nov. 4 because that day is my periodical test and I'm gonna continue my fanfics instead of studying for my exams (lazy me!). Nyways, sorry for the OOC-ness of the characters...! And by the ways, I mentioned the main reason why Sou looks young in this chapter for like (rereads the chapter above... after a few seconds) for like four times. I hope you know what it is and you can try to guess. I'm sure you guys know it! I'll explain everything on the next chap! I need my Physics notebook to be able to do that and right now, my P6 notebook is at school. So mush for that. Thanks for everyone who reviewed!

Anata wa watashi no ichiban desu, minna! Okagesama de! Mata ne!