From what I see you aren't going for the "trapped in the game and can't get out" setting that has been contaminating a lot of stories lately, for which I am glad. 

Overall, I like what has been presented. Fairly structured. Straight forward. However, I am still not set on joining. Could you possibly explain to me what the plot is aiming for or how we will build the story? Will the development of the story solely depend on the characters or do you have something in mind for the future? I'm not familiar with "Log Horizon", albeit I've heard the name and seen a summary, nor with "Otherland" or with DnD mechanics (yes, if you are wondering, I exist). Will that be a problem?