It was a dark and stormy night. An ominous giggle can be heard throughout the 12th division.
Mayuri Hirotsuchi, 12th division's captain, stared at his latest invention, and giggled once more.
"Finally, it's done! My greatest invention!" he exclaimed. Lightning flashed, casting half of his face in light, to be consumed once again by darkness. The thunderous roars of heaven were in sync with his irrepressible giggles.
"Why didn't you on the lights, Mayuri-sama?" his fu-taichou-cum-daughter, Nemu Hirotsuchi asked, switching on the lights at the same time.
"Dumb girl, totally ruined my bad-ass atmosphere," he muttered, blinking his eyes furiously. Nemu cocked her head to one side, looking puzzled. Oh well, at least now I have someone to gloat to.
"Look at this!" he exclaimed, holding up a small computer chip between his thumb and forefinger. "This chip has the ability to change a person's soul into another when the two are simultaneously in contact with this chip! The chip will take a sample of each individual's spirit particle and forcefully inject it into the other party. It will then act as a catalyst to the replication, transcription and translation of the spirit particle. Soon, all the soul's spirit particles will be the duplicate of the other soul's, and vice versa! The best thing is that the soul will be an exact replica of the original, in terms of appearances, abilities and traits! Isn't it marvellous?"
"Does it work on everything, Mayuri-sama?" she asked innocently.
"Don't ask stupid question, girl! Of course it works! It's my invention! I've tested it on some of the minions, and it worked perfectly! They even retained their own memories and thinking abilities!" he snapped.
"As…as expected of the great Mayuri-sama!" she gushed.
"However, what I really what to do is to test it on humans. Appearances of souls change, but what of their bodies? And what will happen if a shinigami and a human touches this at the same time? So many questions, but how to get the answers?"
"Why don't you experiment on the shinigamis that goes to the human world?"
"Yes, I know! Why don't I experiment on the shinigamis that goes to the human world!" he exclaimed, clapping his hands together.
"That's what I…"
"Be quiet, girl, can't you see I'm thinking?" he snapped at his daughter. "Now, the question is, who to be a guinea pig? He or she must be a person of whose behaviour is relatively unique, observable and predictable. The reaction after this experiment has to be rather obvious, so preferably the person should be of high status for us to take notice, and the person must also have a bad temper. Who fits all these criteria?" he mused aloud.
"I know! How about…"
"I know! The chosen one is…" lightning and thunder strikes again as Mayuri grinned "Hitsugaya-taichou."
Somewhere in the 10th Division, a little white haired boy sneezed.