The Vengeful White Cat Lounging on the Dragon King's Lap

The Vengeful White Cat Lounging on the Dragon King's Lap manga summary: All Ruri Midorikawa wanted out of college life was an escape from the shadow of her best “frenemy,” Asahi Shinomiya. Despite her best intentions, Asahi has always made Ruri’s life miserable… so it’s no surprise things go sideways when the two of them are summoned to another world together! Now alone in a completely unfamiliar world and betrayed by the only people she thought she could depend on, our hot-headed heroine swears vengeance… (From: MU) Adapted from  / LN (published by Arian Rose) of same name.