A dense network of colored lines intersects across a white ground, each route labeled with Japanese characters and station names in a geometric grid pattern. The composition uses red, green, blue, yellow, and pink lines to distinguish different transit routes, creating an intricate system map that reads as both functional diagram and visual complexity. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.