Regarding how to purchase: You can buy a minimum of 5 books, or up to all 23 books of the novels you're interested in. We can negotiate the price if you buy a lot! Each book is priced at 610 yen. If you'd like a brief summary or pictures of the book covers, please let me know and I'll take some photos. These are all fascinating works that I've fallen in love with, so please consider buying and reading them. Thank you for looking.