The Hole

A man and a woman sitting at a table in a mysterious space with only one square window, and a monster between them. The male protagonist tries to escape, but he returns in an inexplicable way every time. When he returns, one or two people disappear, and in the end, only the monster and the man remain. The man is eaten by the monster. However, when he comes to his senses, the monster is gone. The man loses his appetite. It is impossible to know who ate whom.