Junkers is Hiromi Nozawa's miniature schnauzer. His name is pronounced "Yoon-kers," reflecting German pronunciation. He possesses the supernatural ability to speak human language, though he communicates primarily with Hiromi. This ability is kept hidden due to Hiromi's fear of consequences like him being taken away. He exhibits other human-like behaviors, such as using a men's bathroom urinal and watching historical television dramas. Despite this, he retains canine traits, including a fear of cats and reactions like cowering or standing alert.

Junkers can grant three "miracles." He offers these to Hiromi to ease her distress during family difficulties. His understanding of complex human emotions is limited; he struggles with concepts like divorce or Hiromi's deeper anxieties. He approaches situations with innocence and optimism, trusting in human goodness. Hiromi's first wish prevents her tutor Keisuke's marriage, leading to his unintended deep depression. Her second wish reconciles Keisuke with his fiancée. For the third wish, Junkers suggests preventing Hiromi's parents' divorce, but Hiromi declines, prioritizing their genuine happiness. She instead wishes for one final joyful family moment, which Junkers grants by transporting them to a cherished beach memory.

His relationship with Hiromi centers on emotional support. He senses her sadness and loneliness from her parents' neglect and potential separation, serving as her sole confidant. While unable to fully grasp her emotional turmoil, he provides stability through his presence and the tangible option of the wishes. After fulfilling the three miracles, Junkers appears to lose his speech abilities, reverting to ordinary canine behavior. However, a final scene shows him using the men's urinal again, subtly implying his magic may persist and leaving his true nature ambiguous.

This character appears exclusively in the 1995 film adaptation.