Sleep tight my baby, cradled in the sky

Synopsis

A family was driving home from a maternity hospital. Satomi and Yasunori were bringing their newborn daughter, named "Orine," home, filled with happy anticipation. However, a sudden accident struck them. Orine lost her parents and was left alone. Nineteen years have passed, and she has grown up. She was being pursued by the police due to an incident. She kept fleeing, but Yuri Aoshima, a member of a shady organization, tried to get in touch with her. Orine agreed to Yuri's demand: to go to an experimental space station. In exchange, Yuri would help her escape. For some reason, only Orine can enter the unmanned space station. Surprisingly, the person waiting for Orine was her mother, Satomi. She appeared in the likeness of her twenties. Orine was bewildered, and Yuri demanded that she turn off the station's power. Reluctantly, she began placing the shutdown device, but she believed it would solve the mystery and help her mother. As Orine and Satomi spend time together, they make up for their lost time. Yuri's goal, Satomi's true identity, and a man called "SENSEI," who is involved in taking over the station—while the mystery deepens, Orine gets closer to the "truth"...