Nemuneko are very cute cat characters that look sleepy with their eyes narrowed.

These cats have become adorably round-bodied from constantly sleeping. They usually look sleepy with narrowed eyes, but even when awake, their eyes are narrow. Sometimes they suddenly open their eyes wide or stand up on all fours, but their short legs don't change their sitting height much.

By the way, although they are cat characters, they are also friends with mice. They spend every day relaxing and chilling with various characters.