“The Most Powerful Success Techniques for LINE Official Accounts” Ken Taku Tsutsumi Price: ¥1600 Thank you for viewing. Purchased new online, read once, and then stored poorly. Both the front and back covers are noticeably dirty. However, the inside of the book is clean and can be read without any problems. #KenTakuTsutsumi #KenTaku_Tsutsumi #book #society/management