Sukkiri Wakaru Eisei Kanrisha Dai 1-shu Text & Problem Collection 2025 Edition by Reiko Horiuchi / Author, TAC Eisei Kanrisha Course / Editorial Collaboration I used this for about half a month leading up to the September 4th exam, but I only used it to refer to the parts I didn't understand in the past exam questions, so it's relatively clean. It's a reference book combined with a problem collection, making it easy to understand. I think that if you use this book and do a few past exam questions, even busy people can pass the exam in about a month without much difficulty. When I bought it, I noticed that the top of page 104 of Chapter 3, "Eisei Kanrisha," was slightly warped, but I continued to use it without exchanging it, so I'll mention it as a point to note. If you don't mind, please consider it. Also, I am selling it on other sites, so I apologize if it sells out.