Kokona Mikasa is a high school student who is in the same class as the protagonist Kanata Kitami. On the surface, she is a cheerful girl with a fondness for dogs, and she tends to be more openly friendly and approachable toward Kanata than many of her peers. However, underneath this bright exterior lies a deeply held private interest: she is an avid enthusiast of romance stories, particularly boys' love narratives and romantic comedies, and can be described as hyper-romantic in her tastes. This secret passion is not something she openly shares with others, giving her a hidden layer that contrasts with her outward persona. In the story, Kokona functions primarily as a classmate and a friendly presence, offering a point of connection for Kanata within their school environment. Her love for romantic fiction suggests a personal motivation grounded in a fascination with love and relationships, though the full scope of her ambitions and personal growth is not the central focus of the series. She does not possess any supernatural or special abilities; her defining traits are her amiable nature, her canine appreciation, and her covert romantic obsession. Her character remains largely consistent throughout the narrative, providing a stable, supportive role that underscores the theme of hidden aspects of personality.