Twenty-four year old Haruna Urabe has three hobbies: drinking, smoking, and cosplay. The manga chronicles her daily life centered on a particular habit she enjoys with a younger colleague, Kinoshita-kun, whom she constantly hangs out with, teases, and plays jokes on. Originating from a series of daily posts on social media captioned with the word Today, the story follows the unique and playful relationship between the unconventional older woman and her junior co-worker as she finds entertainment in her interactions with him.