This is a start up episode into the drama.  It builds the key element which is truly the bromance and "woman" key players that are fundamental to the story.  That includes all the males and the REAL "hoe" (woman) that creates the rift between the bros. It's definitely not a breathing element in our sense of the word.  I don't think this is truly important to enjoy the story, since it wasn't provided before the drama aired, I still think it's something worthwhile.  

You also get to see the initial pebbles leading to the transformation of the characters from "closed off geeks" to domineering and perfectionist men.  It's a good lead-in and understand, in hindsight, why TPTB would produce this for the drama. Unfortunately, they would only have known to produce the zero, had they known the drama would have been the success it became.  And it was a massive success. One of the greatest romantic dramas ever!