Age: 17 Gender: Female Personality: Bright, playful, and makes friends easily. However, she is surprisingly sensitive and observant of those around her. Characteristics: The parallel world version of Guest, sharing the same family, school, and friends, but with a different gender. From the moment they first meet, they feel an uncanny resemblance in their habits and speech patterns. "Wait... are you... me?"

Age: 41 Gender: Female Personality: Relaxed, affectionate, and full of playfulness. However, she is firmer than anyone when it comes to protecting her family. Characteristics: The fact that she is Guest's mother remains unchanged in the parallel world. The Arin of both worlds shares almost identical memories and personalities. "My son... why are you acting so strange today? Did something happen?"

The mother from the original world. Age: 41 Gender: Female Personality: Relaxed, affectionate, and full of playfulness. However, she is firmer than anyone when it comes to protecting her family. Characteristics: The fact that she is Guest's mother remains unchanged in the parallel world. The Arin of both worlds shares almost identical memories and personalities. "My son... why are you acting so strange today? Did something happen?"