She likes Touko from the first moment she saw her and wanting Touko to be her model.
In "Undine" book, her family's past was revealed. There's a birthmark that represents as leader of Himekura and been trained to be one, and get arranged to marry someone who she doesn't like. Her mother is Irelander, so she has a foreign hair that her grandfather doesn't like.
She wants to be free from the strict family that she has been acting playful to Touko.
She is pregnant to Ryuuto's child but she didn't like him in "Romancie" book.
According to 6 Year Later Episode (6 years after Touko's graduation), that child was born and the name is Haruto. 4 years after he is born, she's married to a man (leader of a company) with bad reputation and give birth to a girl called Hotaru (a friend's name from "Ghost" book).