Shy-Ho-Shy is first mentioned in the booklet for Splatune as one of the committee members that heard Callie and Marie perform at the Inkopolis Youth Folk-Singing Contest, becoming their producer soon after. Shy-Ho-Shy created a demo version of City of Color, the Squid Sisters' debut single, as a reference for them during the making of the song; this demo is included in Splatoon Live in Makuhari and features Shy-Ho-Shy's own vocals. Marina mentions in her interview in Splatune 2 that she is in contact with Shy-Ho-Shy. In the interview in Splatune 3, Marie mentions that Shy-Ho-Shy wrote the melody for the song Wave Goodbye after Callie wrote the lyrics; however, Big Man then points out that the song Tomorrow's Nostalgia Today instead features a new producer, You★Me.
|City of Color (Shy-Ho-Shy Demo)|
Shy-Ho-Shy's name is a reference to her real-life counterpart Shiho Fujii, the composer originally in charge of writing music for the Squid Sisters.