Please comment before purchasing as I am also selling on other platforms. ★ Single item purchases not allowed. "Yankee-kun" cannot be sold as individual books, but the other two items can be swapped. You can also choose two books from the selection of books sold for 600 yen each, excluding the author's set, but please "like" them to make them easier to find. ★ For swaps from the page "Combined Sales, Individual Sales Possible, Swaps to Sets Including New Releases," add 40 yen. ★ For swaps from the 2023 release page, add 100 yen. ★ For swaps from the 2024 release page, add 200 yen. (Note that in any case, swaps to sets of 800 yen or more will not change the price.) ★ For sets of new releases, the price for sets of new releases will be a flat 1250 yen including shipping, up to the 800 yen range. ★ Please do not ask for the price based on the above. If you want a new release set, I will immediately create a dedicated listing, so please purchase within 5 hours. ★ If you are unsure about which used books to swap, you can purchase first and choose them up to 2 days before the shipping deadline. Please check the books available below. There are people who check stock as a prank, so those with no transaction history or only a few transactions must purchase within 2 hours of my response. Others, please purchase within 6 hours. (If you comment late at night, I will create a dedicated listing early in the morning, so please purchase immediately after waking up.) ★ The author's name in the title indicates a new release. ★ Important requests regarding transactions are written, so please check the profile and, after agreeing, write "[Profile checked]" and send a message after purchasing, even if it's just a short one. ★ For convenience store payments, please pay within 24 hours! ★ I get emotionally down when people cancel after I calculate the price (T-T) ★ Please be sure to check the price yourself before commenting, as some people cancel after inquiries. After commenting, creating a dedicated page → immediate purchase is strictly prohibited. ★ Returns are not accepted for any reason. ★ Price reductions are not possible.