In many picture story books, wolf is involved in the fantastic world in a variety of ways. The images of wolves depicted in these books are diverse and clear. However, in Maki Sasaki's "I am a Lone Wolf", the wolf is a little one and has virtually no emotions and a clearappearance. It is more like a cloud of shadow wound by countless black threads. This little wolf has no interaction with other characters but soliloquies. The messages conveyed in its soliloquies and the characteristics that appeal to readers are the focuses of this paper. From the author's shaping of the main character, arrangement of the layout, and calls to readers, an analysis of lines, colors, visual movement, arrangement of text and graphics, and narrative rhythm is performed to explain that loneliness is a complicated emotion stemming from aspiration, anxiety, pressure, resistance, and sense of loss; it is hard to explain but can be felt with the heart. In "I am a Lone Wolf", Maki Sasaki creates an atmosphere that gives readers an experience of an emotional therapy after reading along the little wolf's journey. This is the main reason why it feels so real and amiable to readers.