Although she's introverted, shy, and quiet at times, her charisma is the biggest factor in her popularity, even though she doesn't realize it. Yet, she is more open to her family and a few of her friends to a certain degree. But when she met Kei, her mindset started to open up more. At first, she didn't know how to interact with him, given that her broken English made her insecure compared to her adoptive older sister. However, unbeknownst to her, Kei is a Raiju Nefilim and can easily communicate with her, so she grows some confidence and soon develops an attraction towards him.  

Eventually, the two of them became close to the point that they began dating secretly, with only their older siblings' knowledge. But with hidden secrets, they can sometimes be found and have dire consequences on both sides.

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