Hajime Shino is a member of the idol unit Ra*bits, affiliated with Rhythm Link. He has light blue hair cut straight across at jaw-length and light lilac eyes. Standing 165 cm tall with an average build, his appearance frequently leads to initial mistaken identity as female. His stage outfit is a blue and white sailor-style uniform with gold accents, a blue beret marked by a musical note, and brown boots with yellow laces. Ra*bits' policy prevents him from cutting his hair to maintain the unit's cute image, a requirement he initially struggled with but later accepted.
His personality blends kindness, diligence, and social anxiety. He maintains a positive outlook, cherishing simple pleasures such as bread crusts, flowers, and tea. To manage anxiety in crowds or stressful situations, he carries lavender aromatic pouches for their calming scent. Despite his gentle demeanor, he wields notable physical strength, evidenced by victories in arm wrestling against formidable opponents. He is deeply family-oriented, motivated to succeed as an idol to financially support his parents and younger siblings. Moving away from home caused him distress, and he actively maintains close contact with his family.
Hajime's background reflects economic hardship. Growing up poor led to practical habits like choosing economical crew cuts and developing skills in laundry, sewing, and part-time work to support his unit. His middle school friendship with Tomoya Mashiro remains significant; they once visited Yumenosaki Academy in fake uniforms, witnessing performances that left lasting impressions. This experience also marked their first encounter with Nazuna Nito, later Ra*bits' leader.
As an idol, Hajime delivers delicate performances with a demure singing voice described as maid-like. His career includes substantial individual work, sometimes alongside the cross-dressing idol unit Bishoujo Senpai. This association intensified public perception of his feminine looks, causing him distress over potentially deceiving audiences and creating distance within Ra*bits. He expressed concerns that this image might hinder the unit's reunion and the return of Nazuna, who disliked being labeled "cute." Secretly, he became the virtual idol "S1-NON" when Bishoujo Senpai used his motion-captured performance with a female avatar without permission. This identity gained online popularity, though only a few individuals uncovered the truth.
He actively contributes beyond performances, using his sewing skills to modify unit outfits for events and assisting the handicrafts club. He developed a signature tea blend, "Shinonon Blend," added to Cafe Cinnamon's menu. Though favored by Bishoujo Senpai as a potential successor, he declined to focus on Ra*bits.
Hajime's journey involves reconciling his self-image with external perceptions. He repressed negative emotions to uphold a "good boy" reputation but acknowledged this as dishonest. He desires authenticity while remaining grateful for others' esteem. His devotion to Ra*bits drives his perseverance despite personal doubts or industry pressures.