Puella Magi Suzune Magica Series by Magica Quartet, GAN

Suzune Amano lives an extraordinarily normal life as a middle school student by day and...magical-girl assassin by night?! When a group of four magical girls begins investigating the serial murders in their city, they soon find themselves Suzune's next targets! But what motivates Suzune to hunt both witches and magical girls alike?

Suzune Amano is a hard-working middle school student, but her ever-smiling face conceals a dark secret--that she's a magical-girl assassin. As the magical girls of the town are picked off one after another, the remaining few fall into despair. In their darkest hour, what path must these girls take...?

Suzune Amano is a hard-working middle school student, but her ever-smiling face conceals a dark secret--that she is a magical-girl assassin. With the entrance of a new magical girl who stands in opposition to her, Suzune finds herself struggling for the first time. What final conclusion will Suzune's actions wreak...?