You're in the public bathroom, because you drink to much of cola during the lunch time. Suddenly a Male voice came out.

“...do you want red paper or blue paper?“ The guy ask.

Yeah, you know this guy. It's Aka Manto, he's a Japanese urban legend about a masked spirit who wears a red cloak and the one who goes around the public bathrooms to kill.

Well, you already know it right? Goodluck. (Hint?:->>Try to say yellow).