You have a lot of exposition that doesn't tell us a whole lot. Does the reader need to know how tall he is or what color his eyes are?
We change verb tenses quite a bit--from what I've read so far this story might be best served by past-tense, but I could be wrong in that. Not that I'm being anal about it, but it disrupts the rhythm of a story when you switch from present to past and vise-versa.
There are awkward moments--you say that "He gets out of bed and puts on his regular attire", and then tell us what he puts on. Why not cut out the "regular attire" bit and say "He gets out of bed and puts on a bright scarlet red T-shirt...".
Another before that, "Ryu Matsaki groans tiredly...", that is probably saying the same thing twice. Your reader will know that his groaning as he reaches for his alarm clock is a tired groan. So "Ryu Matsaki groans...".
Just a personal thing, I would refrain from giving him a name until later. For instance, when his mom calls him could be our first introduction to his name. I don't know about you but when I was lazy in bed in the morning, my mom often yelled at me by my full name, so she could say "Ryu Matsaki! Your breakfast is getting cold! &etc...".
From what I've learned from formal education in writing and from sheer volumes I've written and read, I've figured out that the key to writing is not choosing what to write, but filtering out the vision in your head and deciding what to leave out.
[Edited by Dhampy, 8/18/2008 9:42:56 PM]