Hitomi is Nanami's older sister, with both navigating their father's absence. She is the ace runner on her high school track team. Their relationship centers on mutual support, strengthened by shared memories of their father, embodied in a camera he left behind; they actively preserve its significance and engage with it emotionally.

Her daily life unfolds in settings like a convenience store, where ordinary moments carry emotional resonance. One scene depicts her finding comfort in eating an onigiri, illustrating how simple, tangible experiences provide solace during reflective or challenging times.

Her dynamic with Nanami includes subtle protective instincts, but emphasizes reciprocity as they navigate grief and daily life together. The camera remains a conduit for their bond and unresolved feelings about their father. Her story remains contained within the original episodes.