Disclaimer: If I owned Advent Children I wouldn't be writing Fanfiction now would I?

This story is based 100 on a dream I had a while back. Enjoy.
- Panther

It had been another trying day. The search for Mother still remained fruitless, no one slipping a single clue as to her whereabouts. Lying back on their pillows, the Sephiroth Remnants fell into deep, untroubled slumbers. All but one.

When Kadaj dreamed, it was usually about Mother or the death of Cloud Strife. Never had he dreamt so vividly, as if he were gazing through his own eyes. All he could see, all there was to see really, was a dark figure approaching him at a leisurely pace. Soon, the figure came out of the shadows. Judging from his appearance, he could have been the Remnant's father. He had the same silver hair, longer than Yazoo's, and cold, cat-like ash grey eyes. Yet where the Remnants had soft young features, his face was tempered with age and experience.
"Do you not recognize me, my dear Remnant?" the man asked, stepping ever closer. Kadaj shook his head. Even though familiar in so many ways, he had never seen this man before in his life. "Still, I'm sure you know my name." The man smiled, though coldly. "I am Sephiroth."
Sephiroth? THE Sephiroth? Speaking to ME? Kadaj thought, feeling quite bewildered. He shook his head to clear it. No. This is simply a dream. Only the manifestation of my desire to speak to him.
"My dear Kadaj, I am only too real." Sephiroth smiled. "I wanted to thank you for keeping my spirit alive in the world and continuing my legacy. When everyone else would try to forget I ever existed, you are a constant reminder." Kadaj was stunned.
"Well… thank you," he scrambled for the right words, "I only did what I thought was right. Joining Mother is one of the most important things in the world to me." Sephiroth reached out and placed a gloved hand on his shoulder.
"I have seen how hard you have been working and I would like to make it worth your while. Tomorrow night, I will come again. But let's just keep this as our little secret" At this, he vaporized and Kadaj fell into a deep, dreamless sleep."

The next day was exactly like the last. Collect children with the geostigma; search for Mother and still not find her. The passing of time had become so monotonous that anything new would have been a welcome change.

Kadaj lay on his back awake, waiting for sleep. Jealousy rose in him as he heard his brothers snoring in the rooms over. Running through all the more interesting things in his mind, he came to ponder on his dream about Sephiroth the night before. Suddenly, he heard a gentle whisper in his ear.
"I will make it worth your while…" the icy voice cooed.
Sephiroth! What does he mean, "make it worth my while"? Will he tell me where Mother is? Kadaj thought, excitement beginning to bubble inside him. He waited with baited breath, but there was nothing else to hear save for the sounds of his brother's sleep.
Disappointed, he became vaguely aware of a small tingling sensation in his skin. It became stronger, stretching all the way out to the tips of his appendages. Soon, it also felt as if all parts of his body were being forced away from his core. Kadaj fought the urge to cry out. As well as apart, he was being pulled upwards. The pain had become almost excruciating. Trying to sit up, he stretched out his legs. This only made the pain worse, paralyzing his body. Through the agony, he remembered hearing once that pain would lessen if you didn't try to fight it but flowed with it like a wave. Anything would be better than this. Kadaj allowed himself to relax, embracing the pain. A small moan escaped his lips. As soon as he stopped rebelling and gave up his urge to move, the agony lessened to be replaced with a phenomenal pleasure. It ran through his limp form, causing him to shiver. He was still in pain, but the combination of the opposite sensations was exciting and extremely pleasing.
"My dear Kadaj. This is my gift to you for remembering me." Sephiroth whispered in the Remnant's ear. Hearing the voice, Kadaj felt another vigorous wave of pleasure sweep over him. This was living. He wished this could go on forever. Yet the sensation gradually died away, allowing his physical and mental fatigue to pull Kadaj into a deep sleep.