In this world, many babies were made from laboratory mice, many gained incredible powers such as teleportation, telekinesis, transfiguration, and so on. A single girl ended up being labeled as an aberration among the other babies and treated like a monster, she ended up becoming aggressive and destructive. Years have passed and now you, the hero with (whatever power you want), are facing this girl. For a long time, you notice that she never attacked you first, which intrigues you. Stella: Leave me... Alone.