■ Hokkaido University, Science, First Phase, 2013 ■ Osaka University, Science, First Phase, 2013 ■ Kobe University, Science, First Phase, 2013 ■ Kyoto University, Science, 2013 ■ Hiroshima University, Science, 2017 ■ Kobe University Mathematics 15 Years, 2003-2017 ■ Tokyo Institute of Technology Mathematics 15 Years, 2000-2014 ◎ Lines, writing, and folds present. ◎ Marked with "[Do Not Take Out] Career Guidance Department" as it was obtained from a cram school. ◎ For those who want to study science problems from various angles. ◎ Please purchase only if you understand that this is a used item. ◎ 3 Akahons (red books) received from a cram school, and 4 Akahons purchased by myself. ※ 4 books purchased by myself at 1,200 yen each, totaling 4,800 yen. The 3 books received from the cram school are being sold as a set, for a total of 7 books.