Shō leads the idol group Callings and designs for Prism Stone. At 16 in Aurora Dream and 20 in Dear My Future, he has light brown hair and dark brown eyes, with his hairstyle growing messier over time. Charismatic and carefree, he channels intense passion into fashion design, sometimes clashing with others over creative interference. He deeply cares for his friends and harbors strong romantic feelings for Aira Harune, though his troubled past hinders emotional expression. A fear of darkness emerges when he clings to Aira in a warehouse.

Their relationship begins when Shō kisses Aira’s forehead after she falls on him at her first Prism Show. He invites her for coffee seeking inspiration but later lashes out at her perceived effortless happiness. They reconcile when she aids his dress design, culminating in a fireworks festival where he confesses unheard love. Despite mutual feelings, Shō prioritizes Callings, refusing to date anyone in the group.

In Dear My Future, his design rivalry with Dear Crown’s Yun-su intensifies as Yun-su pursues Aira as his muse. When Yun-su kisses Aira’s hand mid-show, Shō storms onstage to declare his feelings, giving her his pendant to counter Yun-su’s crown gift. Obsession with surpassing Yun-su strains his bond with Aira until friends intervene—Wataru threatens to date her unless Shō acts.

During Road to Symphonia, Aira becomes possessed by a dark Symphonia dress. Shō arrives on horseback in prince attire to reclaim her. After she falls into flames, he rescues her with a confession and kiss, enabling their joint "Mugen Hug Eternal" Prism Jump.

By Dear My Future’s end, Shō moves to New York. At Rizumu’s wedding, he gives Aira a plane ticket. She arrives late at the airport, where they reunite with another forehead kiss mirroring their first meeting. They walk New York as a couple, designing together.