Tangha Chongshi and his best friend Toshihiko are both engaged in frontier research in brain science and have been brothers for more than a decade. One day, Shigehiko solemnly introduced his new girlfriend, Ma Yuko. He was surprised to find that it was the woman he had fallen in love with at first sight but missed. Chong Shi's heart is intertwined with love and hate, and he is tortured to the verge of collapse by jealousy and self-remorse. However, overnight, Ma Yuzi had already lived with him as a matter of course, and did not mention Shigehiko, who was originally committed to the study of human brain memory. Chong Shi was gripped by great unease.