Lemon Kokoa, a second-year junior high student, combines expertise in Primagi lore with fervent otaku passions for gaming and idols. Her signature long yellow hair, braided into conical strands obscuring her eyes, shortens in episode 9 to expose navy-blue irises. As a Primagista, her locks transform into cascading cyan-tipped ringlets, paired with Radiant Abyss’s gothic lolita ensembles blending mystic purple hues, Victorian frills, and occult motifs. Crippling shyness manifests as visible ectoplasmic wisps escaping her mouth—a phenomenon perceptible solely to magicians—during social interactions, often leading others to misread her anxious mutterings as aloofness. Gaming unlocks her candid side, where she adopts antiquated samurai speech (“sessha,” “de gozaru”). Regular stage performances gradually temper her timidity, nurturing confidence to mediate group disputes and voice opinions. Initially dependent on magician partner Carron for social navigation, their bond matures into balanced reciprocity. Tensions flare when Lemon’s mid-performance insecurity prompts Carron’s temporary resignation, mended through vulnerable reconciliation. She reveres Matsuri Hibino as “Matsuri-dono” and envies Miruki Amauri’s boldness, yet bridges their contrasting energies by founding the duo Milky Lemon. Salads, cola, and the online persona “Jet-Black Morning Star” define her quirks. Collaborations like the duet “Konna sekai ni tsugu” with Carron track her evolution from reclusive gamer to an idol harmonizing solo obsessions with collective artistry, anchoring her place within a once-daunting community.