Another review I missed, this one from Karen Burnham over at SF Signal:

Excerpt:

The Love We Share Without Knowing is a beautiful and only lightly fantastic book. It follows the lives of different people in modern day Japan as they intersect with each other, often tangentially, sometimes meaningfully. It looks at friendship, love, and alienation. In its depictions of both Japanese and American citizens living in Japan, it illuminates culture and cultural difference.