A quiet office worker embraces her new role as a cat mom when she begins sharing superfluous amounts of cat photos on the internet. Riko can't help it--her tuxedo baby is just too cute! Will her coworkers feel the same or will it add to their bewilderment about her? At home, Riko learns more about Musubi, from favorite toys such as a free grocery bag to their shared joy of video games. And Musubi himself learns a new trick--how to tell her when it's dinner time! "Leveling up" in skills, surprises, and adventures extends to real life, as Riko discovers what it's like living with a cat!.