TAC Publishing's "Minna ga Hoshikatta Boki no Mondai-shū" series (Everyone Wanted Bookkeeping Problem Collection), I'm selling it now that I've finished studying. I've only used them for three rounds each, so they're in good condition. I only used them for about three weeks. There are no markings. There might be some minor folds, but they don't affect use. I bought them at the regular price on Amazon. 6 books for 10,560 yen including tax. I'm not considering lowering the price. Please purchase immediately. Japanese Bookkeeping, Bookkeeping Certification