Tentacle
Quick Definition
A subgenre of hentai featuring sexual encounters between characters (usually female) and tentacled creatures or monsters.
In-Depth Explanation
Pioneered by artist Toshio Maeda in the 1980s as a way to circumvent Japanese censorship laws regarding the depiction of human genitalia, the tentacle genre has become an iconic and popular niche. Scenarios can range from consensual "Fantasy" to non-consensual "Horror" and "Rape."