Just read through all the scanlated one shots from this mangaka that are available here on DS. None of them pay off. Lots of open endings. Frustrating!! Still worth reading the originals if you want more. You can skip the YagaKimi doujin tho, it's pretty boring.
I really enjoy their art and writing, but I will definitely temper my expectations of a satisfying ending to any future series, until proven otherwise. I really love these two so much, but I desperately want one more volume.