Disclaimer: I do not own either Detective Conan / Case Closed or Yu Yu Hakusho – if I did, I would be rich and famous! I am currently neither, but frankly, that suits me just fine. I hope this story will be found worthy of both fictional worlds.

"This is Such a Drag!"

Four pairs of sneakers thundered down the otherwise nearly-vacant sidewalk. The morning commute had ended, but shoppers hadn't yet thronged the streets.

"So, Jimmy, we're headed to the place Mr. Gakushi said we'd find his girlfriend?" Keiko asked, panting. She was not quite as accustomed to physical exertion as the other three teens were, so Jimmy was running beside her, letting her set the pace.

"Yep."

Not exactly the thorough answer I was after… "So… where exactly are we going?"

"Just keep going for now. We'll turn right in three blocks."

Keiko turned her head around to look at Rachel, who was running just behind her; Yusuke trailed the other girl by a few feet. "Is he always enigmatic like this?"

"Uh-huh. Infuriating, isn't it?"

"Yeah. How do you put up with him?"

"I really don't know. Keiko, look out!"

"Huh? Eek!" She slammed at full speed into a corpulent businessman, and rebounded spinning sideways and down.

"Keiko!" Yusuke frantically dashed past Rachel to catch his childhood friend.

But he got there too late.

Jimmy had already caught her, just before she could split her head open on the concrete sidewalk. "You okay, there?"

"Y- yeah, I'm fine. Thanks."

A few seconds passed, and he still didn't set her upright. The same thought flashed through both Rachel's mind and Yusuke's: Get your hands off her already, Jimmy! Seeing that thought reflected in their suddenly very jealous eyes, he quickly helped her stand straight.

"Hey, watch where you're going, you brats! Shouldn't you all be in school?" The capitalist with whom Keiko had collided peered at them through beady little eyes tucked deep in his pudgy face. "I should call the police on you for your reckless behavior!"

"Please, sir. I just wasn't looking where I was going. I'm very sorry." Keiko quickly bowed.

"Hnh. Now, that's more like it. But don't think I'll let you off that easy, girl!" He stretched out a bulbous hand and seized her shoulder. Pulling her up against his potbelly, he leered. "I've got some ideas concerning how you can make up for your disrespect."

Eeewww! "Yusuke! Help – "

He was already in the man's face. "Hands off, Fatso! Let 'er go!"

"Back off, boy. I've got no beef with you – yet."

"Last chance, sir," said Rachel, her voice icy. "Let her go." She glanced at Yusuke. On three?

"Oh, so now you brats are threatening me?"

One…

"I'm sure the police will be very interested to know that they have trash to pick up off the streets."

Two…

"Now, then, little girl…"

Three!

In perfect synchronization, Yusuke's fist smashed in the man's face, while Rachel's sweeping kick caught his legs from behind.

Flailing wildly, he went down like a beached whale, releasing his intended victim. And so, for the second time that morning, Keiko found herself falling…

And once again, she ended up in the arms of Jimmy Kudo. He quickly put her back on her feet, not fancying facing the wrath of their already-riled romantic interests again.

Not that they noticed.

"Thanks for the assist," Yusuke told Rachel. "You do karate or something? That wasn't bad."

"You weren't so bad yourself. And yes. I'm the captain of our school's club."

"No way! You wanna teach me some moves sometime?"

"Well, maybe…"

"A-HEM!"

"Eh?" "What?"

Keiko tapped her foot impatiently; Jimmy's face was unreadable. "We have a job to do?" she reminded them. "Besides, I don't think we should be here when the cops really do show up!"

"No, we should be," Jimmy sighed.

"Huh?"

"Well, someone needs to tell them to search this guy for opium."

Rachel hung her head. Not again!

XXXXX

By the time the beat cops (who showed up momentarily) turned them loose, it was nearly noon. As Jimmy had predicted, the businessman had been hiding several bags of the illegal drug within the folds of his belly fat.

"How did you know?" Keiko asked him as they ran on.

"Easy. He clutched as his stomach when you ran into him, but from concern, not pain. After I knew what to look for, it was easy to smell the traces of the drug on him – turning right! – especially when Rachel and Yusuke took him down."

"You're really something else, you know that?"

"You think so? Heh heh…" Looks like I've got another fan… His laughter ceased when he sensed an evil aura growing behind him.

Grr… that fancy so-and-so! I'll give him what for! Yusuke did not take too kindly to even subtle flirting between Keiko and another boy.

Rachel stopped him from rushing the detective. "He doesn't have any interest in her," she assured him. "He has absolutely no interest in girls."

"You mean he's…" he wiggled his hand.

"Oh, god, NO! He's just… not the romantic type."

"Gotcha."

"We're here!" Jimmy announced, jogging to a stop.

"Here? You can't be serious."

"Well, yeah. This is where Mr. Gakushi said his girlfriend would be… if she didn't cut school today, at least."

The other three teens stared at the sign over the school gate. "Ewwww…" Rachel and Keiko said in unison as they turned and looked at each other with disgust written on their faces.

"Next time I see that guy I'll slug him," Yusuke muttered under his breath, grinding his fist in his opposite hand. Dirty cradle-robber!

Jimmy shrugged, his sharp ears having easily discerned Yusuke's threat. Well, I did only promise him protection from the police…

The timing of their arrival at St. Hebereke's School for Girls (a notoriously expensive, very exclusive private high school) couldn't have been better – it was lunch, so the gate was wide open and unguarded.

"Umm… not to be the bearer of bad news, but… you and Yusuke are going to stick out here like sore thumbs," Rachel remarked.

"I know. That's why I need the two of you to go in and get us some girl's clothing to wear."

The girls stood, dumbstruck and horrified.

"Oh, come on. Just borrow it from somewhere – I'd try a locker room, but it really doesn't matter where you get it from. Oh, and grab some for yourselves while you're at it; your outfits don't exactly match the uniform here either."

"It's not that… that… no way!" Rachel declared, waving her hands frantically. "Forget it!"

"Yusuke in a skirt! Ha ha ha!" Keiko collapsed laughing.

Yusuke collared Jimmy. "Look, man, I definitely didn't sign up to go runnin' around dressed like a girl!"

Fate chose that moment to intervene: leaping through the gate came a whirlwind of black rose petals, shedding articles of clothing as it bounded by. When the petals had settled and the leotard-clad girl had vanished in the distance, a complete girl's school uniform and a standard home economics class apron and cap lay at their feet.

"What was that about 'darling instant noodles'?" said Keiko, scratching her head. "I thought she said something like that, at least…"

Rachel shrugged. "I smelled cookies." Pretty darn good ones, at that. Dang! Now I'm hungry!

"Beats me," said Jimmy. "But hey, we've got clothes!" He approached Yusuke, olive skirt in hand.

"No! I refuse! NOOO!"

XXXXX

"Okay, we're all done!"

"Pbst… he… he he… take a look, Jimmy!"

He did as Keiko directed. Ew… well, I suppose they did the best they could, considering his facial injuries.

"Get this straight: I'm only doing this because I have to clear my name." Yusuke spread his legs and folded his arms over the red neckerchief, but the artificial-bust padding beneath discomfited him, so he stuck his hands on his hips instead.

"Hmm… I guess he'll pass for a girl." Not standing like that, but eh…

"He'll have to. It's your turn now, Jimmy."

"Eh?"

"Jimmy Kudo, I swear I will kill you for this humiliation," Yusuke threatened, his voice sounding unnaturally low in his schoolgirl outfit, "Unless you share it."

"Sigh. Fine."

The two girls went to work. In short order, Jimmy Kudo's face was transformed into a passable facsimile of that of a high school girl. Donning the cooking cap and tying the apron around his waist, he poked his head through the bushes.

"All clear. Let's go!"

The quartet pushed through the shrubbery and dashed across the courtyard. Fortunately, the halls were not overly crowded, and the few students they passed were too engrossed in their own concerns to take notice of the girls' different uniforms. "Where should we start looking for Miss Kionna?" Rachel wondered aloud.

"Well, we're talking about a sixteen-year-old girl who's dating a twenty-six-year-old man," Jimmy mused in a bad imitation of a girl's voice.

"So she probably smokes," suggested Yusuke in an even worse falsetto. "What? My mom was just like that…"

Releasing Yusuke from the grip of her evil eye, Keiko concluded the brainstorming session: "So she's probably on the roof."

They clambered up several flights of stairs in single file. As they neared the roof, Keiko giggled. "Yusuke, I can see up your skirt!"

"What?" He tugged the rear of the pleated garment down.

"Just kidding. Now you know how it feels, though. Meh!" She stuck out her tongue and passed him as they rounded the corner.

"So Jimmy," Rachel asked, "do you even have any idea what the girl looks like?"

"Not a clue," he replied, turning the door handle.

"Then how are we supposed to find her?"

"Just watch." Her ushered her through first and held the door for the others. He stepped through the portal and let it slam shut behind them.

XXXXX

Jimmy narrowly ducked out of the way of the barrage of clubs one of his leotard-clad opponents flung at him. What's their problem, anyway?

Despite their best efforts at disguise, the boys had been immediately identified by the girls eating lunch on the roof as intruders; but instead of being scared (as Jimmy had anticipated) they had launched an attack!

The battle raged across the rooftop. Jimmy spared a moment to check on how his companions fared.

Rachel was evading her two opponent's snaking, snapping pink ribbons, but couldn't get close enough to counterattack either. Yusuke was surrounded by a gaggle of girls, who were slicing his borrowed clothes to shreds with razor-lined hoops, but he'd avoided further injury to his own person. Keiko, meanwhile, was engaged in a furious dodgeball duel – and, to her credit, holding her own.

"Come on, girls!" cried one girl, encouraging the others. "They'll rue the day they tangled with the Rhythmic Gymnastics Team!"

Gymnastics? Right… Dodging another volley of projectiles, Jimmy grazed his shoulder against the outer wall of the stairwell. I don't think we can keep this up much longer!

As if an answer to prayer, the stairwell door banged open – and the school's headmistress strode out onto the roof. All combat instantaneously ceased at her arrival.

Yusuke stared at the stately matron. Oh, shit…she does not look happy…

XXXXX

Contrary to Yusuke's initial assessment, the headmistress of St. Hebereke's was not an old battleaxe, but was actually comparatively pleasant – compared to the girls on the roof, at least.

After sending the gymnastics girls off to class with a stern scolding – and a reminder to change into attire proper before going there – she led the worn-out quartet of trespassers to her office.

Jimmy rapidly explained the situation… with a few tweaks.

"This undercover investigation we're undertaking for the police force is of great importance," he concluded. "Actually, any help you could give us would be greatly appreciated."

The headmistress rose from her high-backed chair and walked around to the front of her desk. She paced back and forth in front of them for half a minute. "Hmm… I still don't know. You three look the sort to do your civic duty, but this one…" she stopped and gave Yusuke a meaningful look.

"You wouldn't fault a good man for injuries sustained in the line of duty, would you, ma'am?" Jimmy rejoined. It's not exactly lying…

"Mm… no, I suppose not. Still, I should contact your supervisor."

"No! I mean, we're supposed to be incognito… if he finds out our cover has been blown, we'll be in big trouble!" The others quickly nodded consent to this half-truth. "Please don't!"

"I'm sorry, but, rules are rules. Now, then… wait. Have I seen you somewhere before?" She bent down and stared into Jimmy's eyes.

"Kudo?"

"I beg your pardon?" She's heard of me? I've tried to maintain a low profile, but word still gets out…

"You are the son of the brilliant mystery author, Booker Kudo, are you not? I've seen a picture of a boy who looks almost exactly like you in the photos inside the dust covers of his novels!" She crossed to her fully occupied bookshelf and started to reach for a book; Jimmy quickly recognized it as one of his father's more recent works.

Guess the jig is up. "Yes, ma'am. That's me."

"Well, I shouldn't be surprised to find the son of such an upstanding citizen helping the police. So I'll help you however I can. And as a special favor to you, I won't notify your overseer."

The four teens let out synchronized sighs of relief.

"However," she continued, holding up a finger, "I want a favor from you in return…"

XXXXX

Jimmy shook his head. Even that fast-talk wasn't enough! It was a lucky break for us that she's a fan of Dad's work. But to keep her from calling my bluff, I had to promise to get her a signed copy of his next novel – before it's released. It's either that, or I'll have to explain this whole mess to Inspector McGuire… and Dad.

He leaned back against the tiled wall, weighing his options. I'll get a copy of the novel… somehow. Maybe I can have Doctor Agasa ask Dad for a copy? Hmm…

"I can't believe it! We went through all that hassle, and she really did skip school!" Standing over the solitary sink in the lone men's restroom in the building, Yusuke furiously scrubbed at the final flakes of foundation and mascara still lingering on his face; Jimmy's disguising cosmetics hadn't taken quite as long to remove, since he hadn't needed nearly so much to begin with.

"Well, at least now you've got some clean clothes to wear." Jimmy tipped his head at the folded-up green button-down shirt waiting on the countertop to join the matching pants Yusuke presently wore. Both items were courtesy of the surprisingly sentimental headmistress, who happened to have her son's old junior high uniform stored in her office closet, having run out of room for items like it at home.

Yusuke turned off the faucet and wiped his face with a towel, at last satisfied that he no longer appeared the least bit feminine. It's a damn good thing the girls at this school never come to our side of town. I'd die of embarrassment. Yusuke stared at his blotched face in the mirror and grinned. Now that's the face of a man!

He threw on the outdated shirt and buttoned it up. Hmm… the second button is missing. I wonder: did the headmistress even know her son had a junior high sweetheart? I'd better get someone to sew on a new button before Keiko jumps to any conclusions…

Sudden banging on the door drew both boys' attention. "Are you two done in there?" Keiko called.

Rachel's tougher fists joined the chorus. "Yeah, come on, we still need to find Kionna! How long does it take, anyhow?"

"Coming, coming!"

A/N: Do you know who the "mystery girl" is? Write and send in a review including her name and anime/manga of origin – I'll include the first correct username in my next Author's Note!