This is a valuable item, a first edition from 1967 (Showa 42). "Marriage Design" was created to explain various aspects of marriage. It covers "marriage" not just as a goal, but as a beginning, addressing topics such as mindset, the physical structures of men and women, pregnancy, customs, and sex. Card Composition: Consists of a total of 64 cards. Sex Cards: 48 cards. Sexual Anatomy Cards: 16 cards. ※Normally, there are 64 cards, but for some reason, card number 36 is duplicated, resulting in a set of 65 cards in total. (See photo 5.) All cards are present and complete. This item has been stored at home for a long time, so while there are no tears on the cards, there are small folds and damage to the box. Please refer to the photos before purchasing.