A/N: I was reading some stories and got interested in Case Closed and Magic Kaito again. I think the title for this one is pretty fitting. Another possible sequel to Ghost of a Chance for those that want a more serious story. Let me know what you guys think, hope you all enjoy!

Disclaimer: I don't own Katekyo Hitman Reborn!, Case Closed/Detective Conan, or Magic Kaito.

Down the Rabbit Hole

Anyone that knew the Sawada siblings could tell you that, despite their innocent looks, that the teens were trouble magnets. So when they were escaping from their mafia responsibilities by visiting Tropical Land, it was just their luck that they'd stumble upon two shady men. And from the looks of it, they were drugging a teen. "It's not our problem Tsuna, let's just leave." Shizuka hissed, Tsuna gave her a disappointed look. "We can't just let it happen." Shizuka watched in exasperation as her wimpy brother decided to play hero for once.

"Oi, assholes. Let go of the kid!" Shizuka demanded, pointing a shinai at the men. A man with long silver hair was holding the teen up by a fist full of hair, forcing him to swallow the capsule. Shizuka cursed as she charged forward, trusting her brother to take on the lackey. The silver haired man blocked her swing with the frame of a gun, kicking out at her with his long legs. She silently cursed her height and gripped a handful of knives, throwing them at the man. He hissed as one embedded itself into his hand, giving Shizuka an icy glare.

Tsuna was having trouble with his opponent as well. Since they didn't know whether the men were aware of flames, they were limited to physical attacks. His intuition helped him dodge the large man's shots and he managed to kick the gun out of his hand. The man only smirked. "That stung a little." He says, slipping on a pair of brass knuckles and punching at Tsuna. "Damn it, use the gloves!" Shizuka yelled irritably, trying to keep her opponent distracted from his fallen fire arm.

Gin smirked. "It doesn't matter, that nosy teen is already dead. You children have no idea what you're getting mixed up in." He says, landing a punch to Shizuka's kidney. She wheezed, her weapon clattering to the ground. Shinichi was writhing on the ground in pain, feeling as if acid was traveling through his veins. Tsuna eventually put on his gloves and transformed them into gauntlets, landing a solid punch to Vodka's jaw. He glanced over to check on his sister and saw her being pinned to the ground by her neck. "Sis!"

"This is our first clinical trial. Why not add another test subject?" Shizuka's eyes widened as she thrashed violently in Gin's iron grip, frantically trying to pry the man's hand from her throat. Gin took out another capsule and plugged the girl's nostrils, waiting for the moment the teen would open her mouth to breath. Vodka got his second wind and landed a blow to the back of Tsuna's head. Shizuka glared up at the men, her face turning red from her frantic struggling and lack of oxygen. Dark spots danced in her vision and was left with two options, breath and have a pill shoved down her throat or go brain dead from oxygen deprivation. Her lips parted enough for Gin to shove it down her throat, nearly drowning her with the water that followed. After that, all she was hit with a searing pain and blacked out.

XoXoXoXoXo

When Shinichi came to, he found himself in the company of two children wearing clothes several sizes too big. One was a girl with light brown hair pooled around her head, bruises the size and shape of fingers around her throat. Another was a boy that looked almost identical to the girl with spiky brown hair, a pool of blood around his head. He tried to piece together what could have happened and none of them were good. Somehow they must have stumbled upon the men like he had, most likely putting up a fight. A shinai lay discarded near the girl and the boy was wearing wool mittens for some odd reason. "Should have known those two would get into trouble when they ran off." A voice says gruffly.

Shinichi sat up quickly, wincing at the pain and feeling disoriented. The man that happened upon them had short black hair and was smoking a cigarette. When he took a closer look at them his jaw dropped, cigarette falling from his mouth. "T-This shouldn't be possible." He stuttered, taking a step back. Shinichi tried to keep calm, whoever this man was could possibly help. "What shouldn't be possible?" He asks, his voice an octave higher than he was used to hearing.

Shinichi took the time to look down at himself, his clothes from that evening baggy on his shrunken body. His hands were smaller as well, and he began to hyperventilate as his brain desperately tried to dispel his current situation as a dream. "Calm down kid, you keep that up and you'll pass out. Christ, and I thought those two were a pain as teenagers." One of the children groaned, blinking until their sight cleared. His eyes almost looked amber in the light of the lamppost. "Shamal? What's going on?" Tsuna asks in confusion.

"Someone managed to replicate the effects of-" The doctor looked at Shinichi and became tight lipped. "I'll explain later, after you and your idiot sister's injuries are treated." Shamal says, Tsuna shook his head. "We can't just leave him here! What if the guys that did this come back to finish the job?" Tsuna asks, biting his lip. Shamal groaned. "This is why I prefer female patients. Fine, looks like you're coming with us kid. Hopefully we can find a way to reverse whatever did this." Shamal says, picking Shizuka up from the ground. The girl groaned but showed no signs of waking up, Shamal scowled. "Whoever did this is going to regret it."

Shinichi decided to trust the stranger against his better judgement, his head still pounding. "Well, look on the bright side. At least help came." Tsuna says optimistically, wincing when Shinichi glared. "Bright side? We're children and even if we do find a cure those men will try killing us again. How is there a bright side?" He snapped. Tsuna averted his gaze to the ground, the girl in Shamal's arms wriggled in his grip and looked over his shoulder with a glare of her own.

Unlike her brother, Shizuka's eyes were a light blue. "The reason why either of us are in this mess is because you got caught doing something stupid and my brother was nice enough to play good samaritan. Yell at him again and I'll give you more than a concussion you brat." Shizuka snapped. "So you are awake, I was hoping for a couple more minutes of silence." Shamal laments, getting a smack to the arm.