(Full name) a normal girl, at least in her world. Born and raised in Japan she developed her quirk "Dimension", she could go through solid objects and travel through different dimensions. Passing the entrance exam and getting into class 1-A was her first step to becoming a hero. However, her quirk isn't easy to control. At random times she'll teleport to some random dimension, but quickly get back to not disturb the timeline. When she gets stuck in a dimension with some of her friends she meets new people and goes on weird adventures. Will this mistake show her the disastrous life of a hero in training.