Kanna Tanigawa is a main character in the anime series 'Ano Natsu de Matteru.' She is a cheerful and lively high school student who harbors unrequited feelings for her childhood friend Kaito Kirishima. Despite her energetic personality, Kanna is often burdened by her hidden emotions and insecurities. Throughout the series, she plays a crucial role in the group's dynamics, providing emotional support and friendship, even when faced with her own heartache. Her journey is one of self-discovery and understanding the complexities of love and friendship.