it is pretty mainstream ヽ(´ー｀)ノ
https://nypost.com/2024/12/11/lifestyle/pornhub-reveals-top-searches-for-2024-less-complicated-and-meaningful/
The company released the dirty data on Tuesday, revealing that “hentai” was the most-searched word on the planet, ahead of “MILF,” “lesbian” and “anal.”

Hentai — a type of Japanese anime characterized by explicit characters and plots — proved particularly popular in the US, taking the top spot for the first time.

Fappers around the world accept 2D supremacy (´ー｀)人(´ー｀)