This basically the setup for Zom 100: Bucket List of the Dead. It’s an anime where a guy has his soul drained by an awful company and when there’s a zombie apocalypse, his first reaction is to break into the corner shop and get some beer and have a day off. It’s a fantastic series about living life to the fullest, and the art is so great: it’s incredibly colorful, as opposed to most super-desaturated apocalypse media.
I love how there was a section where everything was in black and white but got more colorful as the MC realized he's finally free while getting chased by the zombie horde.
My interest in anime has waned pretty significantly in recent years but did check out this one when I first heard about it. Absolutely excellent, fun, and very moving towards the end.