Responses
Based on what I remember, in this world it is a sun goddess but in Giovanni's world it is a sun god. Jio received the power of the sun god from a different world and this sun goddess is independent from him. (That's what I understood at least, I might have read a translation with wrong pronouns tho)

They kept referring to the sun god as a he and even Gio called him father, why’d they change it? Even some novel readers are commenting that it was a male, will changing it change a things in later chapters or was it originally a goddess?