I had never heard of this story prior to ordering and purchasing this GN for my library's collection. Upon reading it, I was interested in the concept of duality that played out throughout. The juxtaposition of the love and the hate in each part of the story. But I did struggle to understand what was going on as I read along. Yvain falls in instalove (bleh!) and that basically ruins his life. He then goes around being a doofus trying to do the right thing and finding himself in increasingly difficult situations - fighting demons, slaying giants, trying to dupe his instalove into loving/forgiving him after he previously duped her into marrying him. 
 I was interested enough in the story to keep going but I am not sure that teens are going to be invested in the progression of Yvain's short adventures or understand how each one is building upon the others. The slow construction of Yvain as "heroic" and doing things "in the name of love" are both going to be lost to some teen readers leaving them with a "why is he making such dumb decisions" attitude about the story. 
 While the story translates nicely into a graphic format, I am uncertain how many teens are going to be invested without having any background knowledge of the Yvain's original tale.