Identification of purple haired girl claiming she will pretend to be a cat if things go bad
It's this scene from Episode 9 of Koufuku Graffiti


  The story follows Ryou, a middle school girl who lives by herself. She has a knack for cooking and makes friendships with everyone through her food. The cooking manga is "full of detailed cuisine art to whet the appetite and slightly erotic meal scenes." The "koufuku" in the title is a wordplay on two Japanese homonyms—one which means "happiness," and another that means "appetite."


The girl is Kirin Morino.