A book explaining 17 important lessons, stating that 90% of life is determined in your 20s. - Author: Ken Honda - Title: 17 Things Important for Your 20s - Price: 1400 yen - ISBN: 978-4-86663-134-9 - Copies: 8 million I think the condition is good because I only read it once with a book cover on. I will put it in an OPP bag before shipping.