Ritsuka Uenoyama emerges as a technically accomplished high school guitarist grappling with disillusionment toward music. His initial stoic and aloof demeanor serves as a shield, masking a deeply sensitive and passionate core. His journey intertwines music, personal relationships, and self-discovery. He took up guitar in sixth grade after receiving the instrument from his father. Diligent practice, often around his sister Yayoi using music guides and CDs from bands like 'Artistic Monkeys', fostered an obsession with mastery. By high school, proficiency replaced excitement, especially after his first band dissolved. He continued practicing alone, disconnected from music's former joy. His routine shifts upon encountering classmate Mafuyu Sato carrying a neglected guitar with broken strings. Despite initial reluctance, Ritsuka repairs it and agrees to teach Mafuyu. He introduces Mafuyu to his bandmates, bassist Haruki Nakayama and drummer Akihiko Kaji. Mafuyu's singing voice during a lesson profoundly moves Ritsuka, reigniting his own passion. He impulsively invites Mafuyu to join their band, "the Seasons," as vocalist. Teaching Mafuyu becomes a catalyst for Ritsuka's emotional opening. He observes Mafuyu's rapid learning and the guitar's mystery, initially avoiding Mafuyu's painful past. Deepening feelings for Mafuyu create confusion about his sexuality. Seeking Akihiko's advice brings significant relief, allowing Ritsuka to gradually acknowledge his romantic feelings. They become lovers, challenging Ritsuka's reserve and forcing him to confront vulnerability, expressing care through actions. Ritsuka's personality is introverted, loyal, and responsible. He values authenticity in music and relationships, displaying protectiveness, particularly towards Mafuyu. He works part-time jobs, including at a convenience store and moving company, to support band activities. Internal conflicts manifest as frustration or quiet introspection when processing difficult emotions. Fear of repeating past failures, like his first band's collapse, fuels self-doubt about his musical and relational abilities. His development shows increasing emotional maturity. He evolves from detachment toward tentative vulnerability, learning to articulate needs and support others. In later storylines, including the film "given the Movie," he navigates challenges like Mafuyu's grief and complex band dynamics. He demonstrates growth by encouraging Mafuyu's songwriting and addressing situations where Mafuyu feels neglected, such as during collaborations with other musicians like Hiiragi and Shizusumi. These experiences reinforce his commitment to Mafuyu and the band. Ritsuka possesses sharp blue eyes, slightly furrowed brows, and tousled dark hair with uneven bangs, creating a serious yet cool demeanor. His typical attire is a loosely worn black school gakuran jacket over a white T-shirt, black trousers, and white sneakers. In "given the Movie," his style reflects subtle maturity: a dark navy plaid shirt with rolled sleeves and jeans ("Hiiragi mix"), a light grey button-up ("To the Sea"), or a light gray cardigan over a white shirt, suggesting introspection. His character arc culminates in recognizing music as a conduit for emotional connection and healing. He reconciles his perfectionism with the understanding that technical skill alone cannot convey meaning, embracing music's power to bridge emotional gaps, especially with Mafuyu. This journey marks his transformation from aimlessness to finding purpose through creative collaboration and genuine relationships.