Obviously they can have unrelated CBs without the need of explanations but even if they wanted to follow the storyline, they can have diverse concepts unrelated to fantasy/action.
aespa’s worldview plot is where the aespa girls are also celebrities in the real world (possibly a gg because Karina was a singer/dancer and Giselle a rapper in their character introductions) then they go later to the other digital dimension (Kwangya etc).
SM has made a distinction between their album versions’ concepts for that reason. There’s real world aespa that sings about anything and ‘poets of the universe’ aespa that sings about the universe stories, as they mentioned before.