Fantasy story. The author's presentation is initially in an ironic tone, then the phantasmagoria changes according to the plot, leading into tragedy. From the first sentences, you are captivated by the intrigue with an invisible enemy beating the heroine on the threshold of the apartment. Marinka does not understand who the offender is, because he is invisible, and the abrasions and bruises on her body are real. At first, the story is told from the heroine's first person perspective. Then the author changes the mode of narration, and the reader observes as if from the outside. Marinka's son talks about himself. The author raises ethical questions about education. Inviting the reader to think about who is really invisible in the story? An angel or a son for a mother? It invites us to speculate on how often adults do not notice the problems of children and do not delve into their inner experiences.