Byousoku Zero Mile 

"Wh-Who are you?" One day, the college student Taichi is spoken to by a stranger in a place that is very dear to him. He is informed by the man, who calls himself Zama, that the place may be gone. It is where the orphaned Taichi first met his beloved guardian Kanda. Who is this Zama, who suddenly appears before Taichi? Taichi is anxious...