Dr. Kosaku Tokita, an extremely obese scientist with short brown hair and brown eyes, frequently sports an orange shirt. His childlike personality radiates innocence and enthusiasm, often tinged with naivety that inadvertently creates problems. He exhibits an immense appetite, routinely ordering multiple dishes during meals. Professionally, Tokita is a genius inventor who created the revolutionary DC Mini device, enabling therapeutic dream entry and sharing. He collaborates with Dr. Atsuko Chiba at the Institute for Psychiatric Research, commanding significant respect despite his eccentricities. Tokita affectionately calls Dr. Chiba "At-chan" and harbors unexpressed romantic feelings for her. His emotional dependence surfaces through frequent reliance on her guidance and support in their work. When the DC Mini is stolen, Tokita becomes a target, leading to his capture within a dream world. During the climactic merging of dreams and reality, he manifests as a giant robotic entity that consumes Dr. Chiba. This act forces her to confront repressed romantic feelings for Tokita, culminating in a public declaration of love. This resolution reconciles Dr. Chiba with her dream alter ego, Paprika. The conclusion implies their impending marriage, as she plans to adopt Tokita's surname. Tokita evolves beyond his initial dependence on Dr. Chiba, gaining confidence and independence to actively resolve the central conflict. His portrayal blends traditional Japanese male traits like dedication and intelligence with unconventional characteristics such as obesity and childlike mannerisms, cementing him as a multifaceted narrative figure.