Sadomasochism is a sexual activity that combines pleasure with pain, or a sexual activity that derives pleasure from pain. Sadomasochism is often abbreviated as SM, and is often confused with the term BDSM (bondage and training, dominance and submission, sadism and masochism), but they are similar but not completely consistent concepts. The most important principle for engaging in sadomasochistic...

In social situations, because we are strangers to each other, we can understand each other's hobbies and personality trends by looking at each other's eyes, and we can avoid hitting a wall.