For My Sister, I Turned the Weakest Magic into the Strongest

[Dual female leads + yuri]

At the ceremony to test magical talent, Gu Xin is branded a Z-rank mage, the weakest and most useless rank.

Z-rank mages can't even use basic magic. The only spell they can cast is "Shield," the lowest-level defensive magic, which even babies can use.

Meanwhile, Ning Fu, who grew up with Gu Xin and was like a younger sister to her, becomes the strongest, an S-rank mage. Everyone around her begins calling her a saint.

Gu Xin initially thinks the difference in their magical talent won't change anything. But from that day on, she is bullied. The gap in their status even makes it impossible for her to see Ning Fu.

To make matters worse, while Gu Xin is already despondent, Elke, an A-rank mage from her village, tricks her into drinking a mysterious potion, turning her into a grotesque monster.

Having lost her family and her home, she wanders through the forest.

At the depths of despair, her fate changes dramatically when she meets someone.

That person is the most powerful mage, Mavellika.

Mavellika recognizes the special properties of the weakest spell Gu Xin can cast, "Shield," and says, "One day, Gu Xin will be able to use every kind of magic in this world."

After regaining her human form, Gu Xin becomes Mavellika's disciple and begins to let her talent shine.