It would've been easier for people to view this fic is you add "minyoon" as a tag. This is the name that the pairing of Minho and Yoona is usually called. The MinYoon pairing has been increasing in popularity these days. I started getting into the pairing a while back. Yes, they do look cute together.<br />
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What you typed under "descriptions" should've been in Chapter 1. Under "descriptions," you could've typed profiles for the characters instead. A brief summary should've been added under "forewords" to introduce the concept of the story to the readers without giving much away so that they can get an idea of what it'll be about. <br />
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It's sweet how Yoona and Minho ended up together. Since it's just one whole chapter, it should go under the category of "one-shot." This should be marked as "completed" because it looks like you're not continuing the story and it has ended.<br />
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In your writing, the grammar and the punctuation is where you need to improve. I suggest checking over your work or have someone else who's good in English look it over for you. It seems inadequate with just the dialogue. You could've expanded on it by adding necessary descriptions (the characters' reactions, the actions, facial expressions, etc.). Keep on improving.