"Heeheehee!" Yachiru laughed as she ran away with her newly acquired treasure, she went to pay a visit Mayurin, and as usual the captain of the twelfth division and his research team didn't take kindly to this unwanted visit, so they chase her out of their headquarters, not not before the little lieutenant could take a souvenir.
The girl giggled to herself as she looked the weird object in her hands, some kind of cylindric object filled with buttons that Mayurin's underlings had called a 'remote', but she wasn't really sure what it did, so wanting to satiate her curiosity, she kept running through Soul Society and pressing buttons, hoping something interesting would happen.
But she was so focused on her new finding that she didn't realize she had literally run into someone, crashing into this unfortunate soul, making Yachiru fall to the ground as she accidentally pressed a button on the remote, making a flash surrounded both her and the person she had crushes into.
-----
"Ugh" Ichigo grunted as he woke up, he had no idea why he had suddenly fallen unconscious after seeing that flash but he honestly didn't want to know, he knew the Soul Society was full of odd things he didn't completely understand, and would probably never understand and quite frankly he was just making his way back home, so whatever this flash was, it surely could wait.
But as Ichigo got up, he quickly noticed something was off, the pale walls of the Soul Society looked...odd, larger? How could that happen?
While he started to scratch his head, Ichigo noticed yet another odd change, this time about himself, his arm seemed to be shorted, it also looked more skinny, and why were is palms so soft?
"Aaaiiieeeeee!" a girlish shriek called his attention, turning to the source of it, he looked in front of him just to be met by a bizarre sight, standing in front of him was Yachiru, but not the tiny girl always on Kenpachi's back, the head looked the same as it had always looked like, but her body didn't seem to match, a large body, with strong arms, long legs and behind her back he could see a zanpakutō that was oddly similar to his own.
A lightbulb went on inside his head, a theory quickly forming on his head, and looking down he was able to confirm it, his arms weren't the only part of him to become shorter, but his whole body! He had somehow ended up with Yachiru's body!
"Heeheehee" a giggle took him out of his shock, before he could do anything, Ichigo found himself being lifted up by the girl that had usurped his body, with a wide smile on her mismatched head, "Icchi-chan~ heehee, you look so cute like this, Icchi-chan~" Yachiru cooed as she lifted him up like he was a mere ragdoll.
"Grrr, let me go! I'm not a kid!" Ichigo yelled, his face red with fury, stretching his arms as much as he could to reach the Yachiru but it was useless, his current limbs let her out of reach.
"Awwww, so cute! Fine if Icchi-chan wants to go I'll let him go under one condition" Yachiru began saying, her smile growing into a wide smirk, "You have to win...