She was unknown and ordinary in her previous life. Due to an accident, she was reborn into a comic book world, which was her favorite world (Kuroko's Basketball). Because of that accident, she was a blessing in disguise. She got a portable space with a super omnipotent system. She was reborn in the home of the protagonist Kuroko Tetsuya and became Kuroko Tetsuya's sister. From then on, her ordinary life in her previous life made her extraordinary in this life, and she also met him in her life.