pub. 2013. Yuki Nakajima books & textbook
Hajimete no kantan rokku mishin : Nittoji datte rakuraku nuechau katto shinagara nuttari kagattari nuiawasetari tsukaikata arekore rokku mishin de tanoshi soingu.
Nittoshoinhonsha. /2013-02-01 Tankobon Softcover
isbn-10: 4528013053 / isbn-13: 9784528013056
