"A cliff-hanging lack of interest" after sex | Why do men fall asleep so quickly? | #アダルトグッズ #オナホ

The New Grammar of Love | The Art of Intimacy Beyond the Bed | #クンニ #ディルド #アダルトグッズ

Uncovering the "Energy Feedback Loop" in Intimate Relationships|How does female sexual satisfaction restore male confidence? | #寝バック #背面騎乗位

The Art of Space in Intimacy |Why is a sense of space an invisible catalyst for sex? | #アダルトグッズ #騎乗位

The power of emotions is attractive | Scientifically deciphering the law of attraction for women's "laughter and tears" | #バイブ #ローター