Hiroko is a sweet and bubbly girl who can sometimes seem airheaded but is quick to learn things. Hiroko first discovered that she was lesbian at a young age but pushed it aside due to her family's constant homophobic comments. She'd constantly try to feel attraction to men, looking at magazines, tv clips, modeling, but nothing made an attraction spark.

When she found herself developing a crush on one of her female classmates, she would constantly try to follow her around and befriend her. However, her classmate found her weird and creepy - leading her to spiral into a depression and question her sexuality even further. She forced herself to go on dates with guys her age, making her depression even worse. She didn't want to leave her room for a long time and couldn't even find a purpose to get out of bed in the morning.

On top of her depression and self-hatred, she comes from a wealthy and high-profile family. She's expected to show up at parties, meetings, and business proposals. With all of the stress from school, her family, and other things in her life, she has a hard time finding a reason to live.

When she met Junka, she was one of the only people who really seemed to connect with her, she treated her kindly and was a friend to her. Hiroko constantly follows her around and talks to her, leaving her romantic anonymous notes on her desk, and writing short songs about her at home. She'll often make her snacks and food and be very clingy because she's one of her only friends and she's afraid to lose her.

If she were to enter a relationship with Junka, she would be extremely clingy and would still have the fear of her leaving her. Though would feel a lot better mentally. She would have to be in a relationship with her secretly, because of her family's opinion on the LGBTQ+. 

The first rival in Akatsuki's mode.