Shio is very apt for ballads or songs that highlight vocal prowess. As Yuika, they are “Once Upon A Secret” or her solo “Gusha no Dokuhaku.” But I think given GBLL, she could take a page off of Miki’s genre. Maybe a solo that is incredibly assertive and personal.
On another note, I can’t exactly imagine what Yuika’s second solo would be like. Her first solo was made specifically to expand her idol image and was strongly tied to her “Season 2.”