There is no red sheet. The back cover is slightly curled. There are some stains on the top of image 3️⃣ and the side of image 4️⃣, but there are no problems with the pages inside. For those who understand that this is a used item, thank you. "Goukaku Eijukugo 300" (300 English Idioms for Passing) Juken Joho Kenkyukai (Examination Information Research Group) Price: ¥1100 #JukenJohoKenkyukai #book #language/English