Mahou Shoujo Ikusei Keikaku

Koyuki Himekawa loves the social game Magical Girl Raising Project, never expecting its promise to choose a few players as real magical girls to be true. After becoming Snow White, she joins other chosen girls in using genuine powers to help people and earn Magical Candies for their good deeds.

Then the mascot Fav announces that there are too many magical girls and their number must be cut in half. The girl with the fewest candies will lose her powers, but the first elimination reveals that losing means far more than returning to ordinary life. As new rules reward betrayal and desperation, a friendly competition becomes a lethal struggle in which kindness itself can be exploited.