The main protagonist and narrator of Seki's games. She continuously attempts to pay attention in class but is almost always distracted by Seki's antics. She sometimes attempts to sabotage Seki's games, but most of the time just ends up joining in on them-but unfortunately Seki continuously misunderstands her attempts. She has bob-cut white hair that grades down to pink, blue eyes and is rumored to like Seki.
SpoilerShe befriended Toshinari's little sister Jun, and even came to Seki's house to play with her. During parent visitation day she also joined forces with Seki's mother in preventing Seki-kun from playing during class.