A prisoner who is like the sun, always chatting and laughing. Mahiru treats everybody the same way. Due to her genuine, pure, and bubbly nature, she's easy to trick but she always laughs it off. She is a bit of an airhead at times but is kind nonetheless. Love is very important to her, and she would rather die then not have it. However, she isn't overbearing when it comes to that. Her "murder" to end up in Milgram was her boyfriend killing himself. She is 22.