Hentai Kamen

Probably not what you're looking for. Try using "kamen" when searching for it

Posting edit to my post in the comments because I am encountering some weird lemmy bug at the moment

I remember watching a clip of a Japanese movie on YouTube where a guy holds up a kamen rider or ultraman mask to hide his identity while he fights people

I haven't been able to find the movie and I can't find it in my YouTube watch history

Edit:

In the clip it's one guy with the mask fighting a group of men and a woman and man running away from them while the guy with the mask fights them

My recollection is loose around this so details might be slightly different