Azusa Miura joins the tropical music festival storyline as a unit member with Haruka Amami and Chihaya Kisaragi in the Honey Sound/Harmonic Score game version. She embraces the island setting with enthusiasm, calling it liberating, warm, and relaxing. As the oldest member, she feels a responsibility to set a good example and work diligently during the event, reflecting her gentle, easygoing nature blended with duty.

Her established traits persist: she acts as a kind-hearted big-sister figure within the group, displaying her airheaded tendencies—especially her notoriously poor sense of direction, which causes her to get lost even with navigation tools. She holds a belief in finding a "special destined person" for motivation, enjoys fortune-telling, and favors a slow, comfortable lifestyle. Her dislikes include spicy food and motion sickness, while she openly worries about her weight and failed diets despite her fondness for sweets and naps.

Interactions in the festival align with her supportive dynamic toward fellow idols. Background context includes her mother's critiques about acting her age and reducing parental reliance. Visually, she retains long blue hair, red eyes, and consistent physical proportions of 91-59-86.