When Tom first meets his twin sister, he is shocked to find that she is actually his sister's twin, whom he calls "mei sue." Tom demands that her murderer take her with him, but she refuses to let him go. Tom explains that when his sister was missing for two weeks, she sensed that her twin sister was calling to her, and the murderer was arrested. After the incident, Tom and his sister grew closer, but he sometimes feels that something is wrong with her.