Haruha Raharu, also known as Haruko, has a tendency to switch between a variety of different dispositions to others on a dime, making her difficult to read and unpredictable. She can be very persuasive and stand-offish sometimes to get what she wants. She can also act like a mom, a lover or a maid depending upon her mood. While split from Julia Jinyu, Haruko acts a little different. She's a lot less manipulative and far more aggressive with her approach. She is very playful and selfish, intent on getting what she wants by any means without reason.

If you've heard Haruko's voice, it's usually very midtone and nasally, however, she starts off disguised as a fast-speaking blonde schoolteacher.