What about travel across 8 days?

I am flying from Boston to arrive at Narita on September 28. I will want a rail ticket from there to Kyoto. Eight days later, on October 5, I will reverse the trip.

Obviously, I cannot use a 7-Day pass.

How do I get these two one-way tickets through this process? It seems as though I can only get 7-day and 14-day passes. All I need are two tickets...one for September 28 and another for October 5.