Shiori Itai is a twenty-six-year-old office lady who has never had a boyfriend in her life. Despite her apathetic, low-energy exterior, she burns with a fierce desire to be popular and loved. She eagerly collects tips on romance, fashion, and self-improvement, and throws herself into every challenge with genuine enthusiasm. The problem is that her natural clumsiness and painfully cringeworthy tendencies sabotage her at every turn, leaving her stranded in pathetic or embarrassing situations that she then has to navigate alone. At home, she is a hopeless slob who spends her weekends in her underwear, procrastinating until Sunday night; at work, she is quiet and unremarkable. The manga follows her daily life as a single office lady, presenting a series of short, self-contained episodes that mix comedy with uncomfortable, all-too-relatable moments of social awkwardness.

The story is set in contemporary Japan, primarily in Shiori's small apartment and at her ordinary company office. The tone alternates between deadpan observation and a narrator-like commentary that gently mocks her misadventures while remaining affectionate. As the series progresses, a handful of supporting characters drift into her orbit. Kenta Shiraishi, a bright and sociable younger coworker, stumbles onto one of Shiori's most humiliating secrets and gradually becomes fascinated by her. Sonobe, a slick and handsome colleague with a reputation as a player, becomes intrigued by Shiori's complete lack of filter and starts observing her like a curious specimen. There is also a brief romantic episode with Inukai, an ostensibly perfect banker who turns out to be just as lazy and messy as Shiori is. These relationships develop slowly, often without Shiori even noticing the interest she generates, and the manga mines humor from the gap between her self-image as a hopeless loser and the way others begin to see her.

Notable narrative arcs include Shiori's disastrous first date with Inukai, where both parties try to hide their true slovenly natures, and the running thread of Shiraishi quietly falling for her while she remains oblivious. The manga does not feature a grand plot: it is a character-driven comedy of everyday failure and small‑scale growth. Over its run of one hundred chapters, it chronicles Shiori's incremental steps toward becoming slightly less isolated, making a few genuine friends, and experiencing the faint stirrings of romance, all while staying true to her fundamentally awkward and endearing nature. The series concludes with her life modestly improved but still recognizably her own, offering a warm, low‑stakes resolution rather than a dramatic transformation.