Koguma-kai Hitori de Tokkun Set of 4 books 1. Tensukei 2. 47 Kasanezukei 3. 52 Kaitenzukei 4. 65 Tsumiki no Kazu (Although "Kaitenzukei" is included in another item I am selling, I mistakenly purchased two copies. Please be aware that if you wish to purchase these together, there will be a duplicate.) ◯ I scanned all of them and printed them out for repeated practice. ◯ There are traces of erased pencil markings on some pages of Tensukei. ◯ There are probably no pen markings, but please forgive me if I missed any. These are used and offered at a low price. Thank you for your understanding.