First off, you tell me to injoy. I'll tell you why I can't and won't injoy... because you spelt it WRONG. It's enjoy. With an E so if you want more people to come read this I suggest fixing it, especially in your summary.

Now to your actual fanfiction:
The swearing first off, Heero is not really a character that would use a swear lightly, such as the context you have him using it in the first paragraph.

Also everytime you have someone new speaking you should start a new paragraph. Example:

"Heero, I want to play a game!" Cried Duo.

"Alright Duo, I said I would do that with you but can you wait so I can finish my work first?"

"Fine!" Duo turned to sit in his corner and cried.

Next point. This is filled with spelling mistakes and grammar errors. I would find a beta since you clearly are unable to find some of the errors yourself, which is not an insult some people can't. That is why the world has editors. Get one.

In regards to how Duo lost his sight: I'm sorry that was really pathetic. Do some reasearch. Just search on the net there will be lots of sites. All you have to do is choose a way for Duo to lose his sight and then use that.

How you have it now is just a glaring beacon that you are inexperienced and write not for yourself but for ego boosting reviews. Doing the reasearch to make your story moer plausible will make you more credible and more successful.

When you use three periods in a row like this, "..." that is called an elipse. When you use more then three periods in a row, like this: "..." that is called abusing the grammar rules. You don't need more then three periods, and you definately don't want to use more then one elipse in a paragraph.

You don't always have to identify whoes saying what when your writing. Says Heero, Asks Duo, Answers Heero.

That gets repetitive, tiresome and annoying. When you start a new paragraph everytime someone speaks and if you have a new character speak then you don't have to do that. For example:

"Lets go to the park Heero!"
"Okay, but Duo first put on sunscreen."
"Hey are you guys going to the park?" Quatre inquired, looking at Duo.
"Why yes Quatre, yes we are." Duo poked Quatre in the side as he said this.

See?

Kissing. Oh that was an amateur attempt. Go find some fanfiction to read to see how kisses end. Since I have never seen one that just ends like that before. It really disrupts the flow of your writing.

Another point - I don't know what you do with your friends, but me and my friends don't kiss to say thankyou no matter how close we are. We hug, but we don't kiss. I'm sure we'd start getting violent if someone started kissing to say thanks.

This needs a lot of work. You need a lot of practice, but if you work at it and get help from a dedicated beta whom you use for everything you write, you can do much better then this.

Are you freakin' mental or something!? I haven't betaed this yet! In fact this is the first I've seen of it in its entirety! Why didn't you email me the original? I'd have gotten on it post haste! You also said you'd fixed the past/present/future tense thing! You lied to me! Honestly, do you have any idea how bad this reflects on me as your beta?! Why didn't you tell me you needed it looked over? Anyway, I'm gonna fix this as soon as I can. Also... a little warning next time might be nice, really, you nearly gave me a heart attack when I saw this alert.