What kind of title is this?: Manga.
Where can I read it?: Reading links are listed for Pixiv Comic, Kodansha USA, Seven Seas Entertainment, K MANGA. Check availability in your region.

Synopsis

About The Masterful Cat Is Depressed Again Today

When Saku took in a stray black cat, she never expected that he would become the equivalent of a housekeeping life partner. But Yukichi, a giant cat who towers over Saku, is not your ordinary feline. He takes great pride in his culinary skills, and a good sale at the supermarket always gets his whiskers twitching. Saku may not have her act together yet, but at least she has Yukichi! (Source: Seven Seas Entertainment) Eighteenth place of Tsugimanga 2020 Award in the Web Manga Category

Comedy Fantasy Slice of Life