[Machine Translation] "Thank you" for being with me. A cyborg created for sex Toshio, built by modifying a boy s body, was taken in by Shindo, his former caretaker. He leads a peaceful life, doing housework for his beloved Shindo and waiting for him to come home. However, while sorting through Shindo s belongings after their move, Satoo finds a photograph. In it, he sees himself wearing a school uniform alongside an unfamiliar girl Human x Cyborg BL: The Long-Awaited Sequel, ...Toshio, You Did Your Best." All his memories have been erased so he can t even remember an important promise.