At night, in the dark, writhing men and women, gasping voices! In the park at dusk, in the back seat of a taxi, in the attic with my husband's brother, having sex at a festival night, perverted cosplay in the dark, a rendezvous between my mother-in-law and my son, in a tent by the riverbed, at a lodge... Intense breathing, excited sex! A sexual act of excitement that is lost in the dark night.