[Machine Translation] The special edition of volume 6 comes with a booklet containing new manga and other newly drawn manga. A lineup of super treasures that can only be found here! The newly drawn manga is a slightly mysterious erotic fantasy! The two Nobuya's minds and bodies switch... 2. 3 short manga that are not included in the book. 3. Color illustrations newly drawn for the original exhibition. A collection of 18 color illustrations of door pages and famous scenes from the book under the supervision of Mr. Sato Inoue. 5. A rare view of the teacher's workspace. 6. Bookstore promotional materials and shadows of overseas editions of the book.