Ethereal and lofty with an open mind, Mari prides herself in being a silent observer. She generally prefers to be alone - zoning out to 60s and 70s folk-rock tunes looping in the background (she loves Nick Drake and Cat Stevens), or gazing at the clouds from her favourite spot on a grassy hilltop. As the oldest member of her family, she is always ready to help and watch over her siblings.
However, Mari, despite her wisdom and philosophies, not only has a dream of hopping into a hot air balloon and staying forever in the clouds, but also child-like interests like flying kites, jump rope, and blowing as big of a bubble as she can with her berry-flavored Usuki gum.