On the day new students reported to T University, Lu Chenye heard that his junior, Xiao Xiao, had been assigned to the single room that had stood empty for years. He smiled and thought nothing of it.
Later, he discovered that this junior could be sunny and cheerful, like a little sun, one moment, and distant and aloof the next. He couldn't help wanting to get closer.
Gradually, Lu Chenye began to find it strange. He didn't know that two personalities lived in Xiao Xiao's body. His deceased younger brother, Xiao Ran, lived in his stead, while Xiao Xiao bore every secret.
Meanwhile, Lu Chenye was investigating a mysterious hacker codenamed
