Shota found Charo as a newborn puppy alone in a snowy park and became his owner. Residing in Japan, Shota shares a strong bond with Charo, who feels deep loyalty and affection for him. When Charo is accidentally separated in New York City, reuniting with Shota becomes his central motivation. Despite numerous challenges, Charo persistently desires to return to Shota. During this separation, Shota appears in Charo's dreams, depicted as waiting and yearning for his return; these visions fuel Charo's resolve to journey back to Japan. Shota's family includes his father, Ichiro, and his mother, both part of Charo's remembered home life. In later adventures, such as their journey through the Middle World—a realm between the World of the Living and the World of the Dead—Shota accompanies Charo, demonstrating their continued partnership. Shota remains a consistent emotional anchor for Charo across all their experiences.