"Derujun x Bun'yabetsu Kanji Kentei Problem Collection, Grade Pre-1" Obunsha Price: ¥1350 #Obunsha #Books #Language/Japanese I bought this intending to take the exam, but I didn't end up taking it. I've read it about 2 or 3 times. There are no markings or notes. There's a small coffee stain, but I don't think it will affect your studies. I hope someone who understands this will purchase it.