Miki Asou, a shy and reserved convenience store cashier, works under Yuji Mikage, her manager. Her quiet exterior belies a deepening romantic attraction to Yuji, which she conceals hesitantly. Distinguished by long red hair and a standard uniform shared among colleagues, hers occasionally draws attention due to its unconventional design.

Her story centers on her dynamic with Yuji and Satsuki Mine—Yuji’s late brother’s fiancée—as she navigates unspoken feelings amidst his initial pursuit of Satsuki. Tensions escalate when a vulnerable moment between Miki and Yuji complicates his priorities, challenging his emotional focus.

Though her exchanges with coworkers like Makoto and Kurumi remain limited, Miki’s internal struggle defines her arc: balancing concealed affection with the demands of her professional environment. The narrative omits exploration of her family history, personal past beyond the workplace, or expanded roles in alternate adaptations.