I saw a trailer of BL movie??

I think it was last year that I saw a trailer of a BL japanese movie, and I remembered reading the comments of the video saying it was inspired by a manga. But I forgot where I saw that video, and the name of the movie.
What I remember about the story showed by the trailer was something like this: a straight men wearing his suit, at night time (went for a drink with his co-workers) is kidnapped by a weirdo that begins doing experiments on that man's body by using sexual methods... the point of doing that I think it was to prove that even though that man was straight he will feel pleasure with another man's touch... well, that's what I remember. DO YOU KNOW THIS? or do you know a manga like this? If so, tell me pleaseeeeee! Thanks :)