Yoshino Naganohara

As Mio's mischievous older sister, this energetic character finds endless joy in pulling playful pranks and donning elaborate costumes to tease her sibling. Her spirited personality and love for dress-up often lead to comedic interactions that define her role within the story. Driven by a playful sense of humor, she constantly seeks ways to surprise Mio, making her a memorable and lighthearted presence throughout their shared adventures.