Altawoman: British Edition! (Patreon)

Julie Brown, mild mannered librarian at the British Library, stumbles across a hidden chamber where many ancient and dangerous books of magic are stored. Whilst reading from an eldritch grimoire, a portal opens and sucks her into the heart of the Alta Dimension! Exposed to the light of the Great Crystal, Julie undergoes a wondrous and powerful metamorphosis into an ALTAWOMAN! Returning to Earth forever changed, Julie fights for what's right as Britain's most powerful woman!