The only survivor.

Luo Ningyang was disliked by all sorts of people inside the village when he was young, because when Luo Ningyang's family had a big fire when he was young, the whole family died, but Luo Ningyang got by because he was protected by his mother, and became the most obscure person. Then Luo Ningyang went to college in a foreign province and returned to the village after graduation, and the house that was once there was converted into an apartment. After Luo Ningyang moved in, he got to know Zhang Bo in the janitor's room, and originally greeted him only at noon, only to have Zhang Bo die strangely inside the janitor's room at night. Luo Ningyang found Zhang Bo's diary when he was young when he was organizing his belongings, and learned from the content that Zhang Bo was a fireman when he was young and participated in putting out the fire in his own house, and wrote that the fire was man-made.