Dōki-chan, a diligent Tokyo office worker, excels professionally yet grapples with romantic uncertainty, particularly toward colleague Dōki-kun. Her timid attempts to confess feelings are thwarted by assertive rivals: a junior coworker and a senior business partner vying for his attention. Petite with short hair often tied in a ponytail, she contrasts her rivals’ bold physical presence, sparking occasional self-doubt in situations highlighting appearance. Blending earnestness with social awkwardness, her romantic missteps and comedic misunderstandings arise from subtle tactics—strategically planned hotel shares or discreet lingerie—often foiled by rivals’ interference or her own hesitation.

Initially reactive and flustered, she gradually discerns rivals’ schemes, like suspecting bugged gifts. A pivotal dream-induced confession propels her toward bolder honesty. Once mutual affection with Dōki-kun is acknowledged, her role transitions from comedic target to balanced partner, though lighthearted mishaps linger.

Her professional rivalry extends to Senpai-san, who once rejected Dōki-kun in college, and Kouhai-chan, whose relentless pursuit sustains tension. Private moments—cat-sitting, social drinks—add depth beyond her career-focused life, absent familial ties. Erotic daydreams, a veiled competitive streak, and increasing resilience define her evolution. Small gestures—exchanging Valentines, shared work trips—mark her relationship’s progression, yet comedic hurdles persist, anchoring her at the heart of romantic and situational humor.