What's Missing?

"The Lost Protagonist" is a game that tests your imagination. In the game, you have to draw a picture and let other players look at the picture and guess the riddle, but it is not to draw the "protagonist" for everyone to guess, but to draw the environment and situation around the protagonist so that others can guess what your "protagonist" is. !
If you want to win, clever composition and wild guessing are more important than being a competent painter!