Manga Sex Tube - Kafun Shoujo Chuuihou 01

Based on the manga of the same name by Koume Keito, In this parallel universe, sex is not only not a taboo subject, but it is also not a distinct entity. This is owing to the presence of pollinic humanoids, both female and male, who move through the air like pollen and, when they come across a receptive human, begin the process of conception, or at least that is what they want to accomplish. Seeing them everywhere and all the time during their season is quite natural, and since there are only a few methods to escape them, practically everyone becomes a victim of the pollinic humanoids' mating allergy.