"240 Extremely Famous High School Math Problems: For Science and Arts Students - National and Difficult University Levels" Takashi Hirotsu Price: ¥2000 This is a reference book I used when I passed Osaka University. I've put sticky notes in it, but there are no markings inside, and I will remove them before shipping. As you can see in the fourth photo, there's a slight bend. #TakashiHirotsu #Takashi_Hirotsu #Book #Society/Education/Learning