Kaori Asai is a supporting character in the anime series 'Kimi ga Nozomu Eien,' also known as 'Rumbling Hearts.' She is a classmate and friend of the main characters, Haruka Suzumiya and Mitsuki Hayase. Kaori is portrayed as a kind and cheerful individual, often providing emotional support to her friends throughout the series. Her presence adds depth to the social dynamics within the group, and she plays a crucial role in the unfolding of the relationships and emotional developments among the main characters. Her interactions help to highlight the series' themes of love, friendship, and emotional resilience.