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Y/n L/n is a girl that was born in the first generation of quirks on Earth. She always thought she was quirkless until she suddenly found herself in another dimension on her 15th birthday. After 300 years she returns to her home world with hundreds of powerful quirks and the goal of living an entertaining life and making real friends. Y/n is a thrill-seeking girl, who lives seeking for a fast heartbeat wherever she goes, after all, life became a little boring after some decades. Y/n can care deeply for others, however, 300 years of instability and suffering has made her a little judging of herself. Will she able to break free from her attachment issues and self-hatred and connect with her new classmates in UA and become a hero?