Midori's Refill - Cat is a monthly planner illustrated by Sayo Koizumi, a genuine cat lover, based on the concept of "getting closer to cats".
The 2026 edition, “The Cats of the Koizumi Household,” features the everyday lives of the family's four unique cats. It's a cute and enjoyable planner refill for cat lovers.
- Monthly pages dated from December 2025 to January 2027
