Old edition, Mathematics for University Entrance Exams, 4 supplementary volumes + bonus

Out of Print, Daisū Series 4-Book Set, Tokyo Shuppan

① Science-Oriented, New Problem Exercises
There are stains on the cover and spine. There appears to be something like correction tape on the spine.
There is no hindrance to the exercises, but some pencil markings were present, so traces remain. The contents are generally browned due to yellowing and stains. (Photos 2-7)

② New Mathematics Exercises 2009
There are no writings, but there are marks on the cover as if a sticker was peeled off. There are scratches and stains on the cover. The edges of the pages are slightly yellowed. (Photos 8-10)

③ New Mathematics Standard Exercises 1998
There are no writings, but there are scratches and stains on the cover. The edges of the pages are slightly yellowed. (Photos 11-13)

④ Mathematics III Standard Exercises 2014
Some writings were present, so traces remain.
There are scratches, stains, and page folds on the cover.
(Photos 14-19)

As a bonus, I will include "This One Question That Decided Success or Failure for Medical School Applicants" from photo 15.

Since none of them are in pristine condition, I recommend purchasing them for use as exercise materials or for those who are satisfied with checking the problems and explanations inside as reference material.