I've only read it once and stored it in a place away from sunlight. I don't see any yellowing or stains. I believe there are no creases either. Volumes 1, 2, and 4 still have their obi strips attached. I don't see any tears in the obi strips. Volume 3 did not originally come with an obi strip. It's in very beautiful condition, like new. This is a large-format manga.