Lyric discussion by yancy x edge 

Cover art for Centennial lyrics by Tokyo Police Club

i'm not exactly clear on what this song means, but obviously he's refferring to someone who is blind ("the letters are unread, she's heard it on cassette" "she's got books on tape"). it seems to me that this is possibly a childhood friend with whom he had a close relationship, and possibly there was an accident that caused her blindness. possibly, "this coming thursday evening is our centennial" refers to an anniversary of when they met or became friends or began their romance, who knows... i don't know what the significance of "centennial" could be, or most of the other things such as "passenger still" and "parading on the rooftops"