When that serious girl at my part-time job gets drunk, she turns into a kissing monster!? She's vulgar and sexy and begs for sex all night long Mirei Uno

The story revolves around the complex relationship between Mirei Uno, a responsible and reserved senior at her part-time job, and her junior coworker Kuroi, who harbors unrequited feelings for her. As Mirei transforms into a more uninhibited version of herself when intoxicated, their interactions become increasingly intimate, leading to a deeper exploration of their emotions and desires. The central dramatic tension arises from navigating the blurred lines between their professional and personal relationships, complicated by Mirei's unpredictable behavior when drunk.