All the practice problems have handwritten notes in pencil and colored pens. I am also selling other Toshin texts, so I can offer a discount for combined purchases. Feel free to comment. Instant purchase is OK. For those aiming for Todai (University of Tokyo), Osaka University, Tohoku University, medical schools, Nagoya University, Kyushu University, Hokkaido University, etc. Also for those using Sun-dai, Kawaijuku, summer courses, and winter courses.