This Magical Girl is Mine Novel

Rachel's roommate Sophia leads a double life as Strix Striga, one of North America's most powerful magical girls. While Sophia battles witches created by the mysterious Jovians—extraterrestrial beings who made Jupiter disappear ten years ago—Rachel is left longing for the attention Sophia gives to her enemies instead of her. The Jovians originally granted magical powers to teenage girls, but after one of the first witches destroyed Texas, they became more selective, now only choosing adult women. These chosen few must decide whether to become magical girls defending humanity or witches serving the Jovians' war. When the Jovians offer Rachel unimaginable wealth, power, and most importantly, Sophia's undivided attention, she accepts. Now a witch herself, Rachel plans to grow strong enough to defeat the seemingly invincible Striga. Only then will Sophia finally belong to her completely.