After-School Bitchcraft, Vol. 3

When new student Elina transfers into Class C, Ririka can't help but notice how similar they are. And when she starts hanging out with all of Ririka's friends, it becomes obvious that Elina's trying to replace her! Little does she know that her new classmate is actually a fellow sorceress, and she'll need the help of all her friends to take down this powerful witch!

Volume 3 of the After-School Bitchcraft manga series by Yu Shimizu.