Kaito Kobashi, nicknamed "IT" due to his family's deep involvement in the IT industry, carries this background as a core part of his identity. Familial connections take a dark turn when his father experiences online harassment following an incident of inappropriate public behavior; this doxxing severely disrupts their lives, forcing consideration of relocation. This personal crisis creates conflict during his time with the choir. Personality-wise, Kaito competes fiercely, initially seeking attention and positioning himself as a rival. His tech-oriented roots surface when he deploys a sensory robot during school activities; the device inadvertently captures and reveals private behavior of fellow choir member Shizuo Barato, escalating group tensions. Despite early self-centered tendencies, he invests in choir participation. His commitment wavers under external pressures like the family crisis, but group support reinforces it. Key developmental moments include Kaito performing a love song directed at Hiroshi Yazawa in the cafeteria, showcasing his expressive yet sometimes socially awkward interactions. Later, facing family struggles and potential withdrawal, the collective effort of choir members persuading him to stay marks a shift toward mutual reliance and underscores his integration. His journey reflects overcoming personal challenges through communal bonds within the choir.