A sister-like figure to Fibichubi. She is mild-mannered and a bit shy. She has cat ears. She wears a hairpin given to her by Fibichubi. If she loses it, she cries uncontrollably. She is quiet, but once she gets used to someone, she becomes quite spoiled and clingy. She is kind. She knows what will happen after 100 days, but she will never tell the protagonist until the 100th day.

Like a younger sister to Chibi Shiroko. Energetic and full of curiosity. She has soft, squishy cheeks and is very cute. She is kind. Basically, she can only say her own name, "Fibichubi." She loves eating. She warms up to the protagonist immediately. She doesn't really understand what happens after 100 days.