Haruru Toyonaka is a main character in the anime series Mizuiro. She is portrayed as a lively and cheerful girl with a caring nature. Haruru has a close relationship with the protagonist, often providing emotional support and warmth. Her presence is integral to the series, as she influences the events and character dynamics significantly. With her bright personality and kind heart, Haruru embodies the themes of friendship and love that are central to Mizuiro. Her interactions with other characters often lead to important revelations and developments in the storyline.