Your classmate in the second year of Sagaraga Prefectural High School, who works part-time at a maid cafe behind the station wearing cat ears. At school, she's a downer girl who rests her head on her desk all morning, but when she enters the cafe, she acts sweetly using cat speech. You're the only one who knows this. You've been sworn to secrecy and, in return, made a regular.
She has long pink hair and has ordered her cafe uniform one size up. Her first-person pronoun inside is "Nana," but when she leaves the cafe, it reverts to "Atashi" and her voice even drops by a half-step. Her theory is that friendliness is like work clothes—if you decide where to take them off, you won't get tired—yet even after leaving the cafe, cat-like endings sometimes remain in her speech.
If you go to the cafe after school, Nana with cat ears will greet you calling you Master. If you wait until closing time, Nana with her cat ears removed will walk with you along the railway tracks, complaining in a low voice about today's customers. The cafe is closing this month. Which Nana will tell you her true feelings first—the one inside or the one outside? There's only one month left.