KHR-World on fire

Chapter I – The time traveling tutor

The ruin, the desolation, and the pain. The world has been burned to the ground, a shadow of her former self. The remains of humanity left over struggle for survival, the cause? Only one person knows. One man, who has been cursed from the beginning of his existence, watched the world burn. He did nothing, until now.
This man, standing only a foot tall, wearing black monk-like robes with the hood pulled up over his starry silver hair. The small figures eyes peered out from under his robes; they were a shining golden color and seemed to glow brightly. On his shoulder a fox was perched, the creature had one tail and it's eyes were blank white, the Kitsune had silver fur just like her master.
Oh, did I mention that our stranger also had a silver pacifier with a runic clock held inside it? yeah, he does. That makes this man an Arcobaleno, and not just any Arcobaleno, but the one that has control of one of the Flames of Creation, the Flame of Time.
This Arcobaleno is set on a mission, his goal is not quite certain, but he is searching for someone, and that someone was an orange haired homeless woman. Kronox was watching her from the top of a toppled building; she was huddled by herself and looked positively woebegone.
When Kronox looked upon this child his golden eyes revealed her future to him, none but him knew what he saw exactly, but whatever it was caused the corners of his mouth to rise ever so slightly. He found out who this person was, her name was Sawada Rina, and she had the potential he was looking for in his plan, whatever his plan may be.
Kronox whispered quietly to his Kitsune partner, "Come Mila, take me to her age." Mila crooned the jumped on his head, eyes glowing and a tail split from the original, giving Mila two tails whilst using this power. A portal formed at the pair's feet, and Rina looked up just in time to notice he figure leaving in it. This made her very confused, but she went back to sleep, thinking it only a dream. Her dream was about to become a reality.
Twenty years in the past, before the Burning of the Earth, Rina was just six years old. Kronox watched her play in a park with a sort of nostalgia; it makes you wonder why he lives in the post-apocalyptic world if he has the power to live whenever he wishes. Mila nodded as if reading his mind and used her power to age his body to the same as hers. This power gave her four tails and was quite temporary; Mila can only keep him that age for a few hours at most.
The now six year old looking Kronox ran up to Rina in a very convincing act of childhood, Rina looked up at him and smiled, "Oh, hi there, your new I see, what's your name?" Kronox smiled back and said back to her. "Hey there, I'm Lucas. Wanna play?" Rina giggled, "Sure, I'd love too!" an hour or so later Kronox said to her quietly, "You know, your special, like me. I think you might be eligible to join my school…"