[The ideal sex education book is here]

•We offer this work for the innocent ones among you who were intensely staring at their health education textbooks

•You can learn everything starting from the differences in men and women's bodies until how to make a baby

[Recommended for people who]

• Are tired of ordinary pictures ✓
• Have daydreamed about erotic things with the illustrated girls in the textbooks ✓
• Rather than thin girls, prefer ones who seem to have more meat on their bones ✓
• Like girls who are easily pressured and open their legs at the sight of money ✓
• Somehow feel that girls who have moles on their boobs are erotic ✓
• Prefer women's areolae to be a bit on the bigger side rather than smaller ✓
• Like women who will sleep with other men despite firmly insisting they are married ✓

[Not recommended for people who]

• Prefer breasts with unrealistic shapes and sizes ✕
• Believe adultery is unacceptable ✕
• Don't care about women's profiles or sexual history ✕
• Prefer virgin girls ✕
• Don't need any more sex education ✕

On the other hand, because there are plenty of practical examples involving men and women contained in this advanced work, this is a must-have for those who wish to perform sex education.

(Source: DLsite)