Kazuya Kasuga

This character is Kyōsuke's younger cousin, often mistaken for his son, and possesses unique psychic abilities. Primarily relying on telepathy, he occasionally demonstrates telekinesis. A notable aspect of his story involves the ability to switch bodies with Kyōsuke through head-banging, often for various personal reasons. His relationships with female friends add depth to his narrative, paralleling other key character dynamics in the series.