At an Izakaya with a Beer in Hand. ~Drinks taste better seeing the pathetic state of my ex-boyfriend and his so-called best friend who slept together~

A woman who was cheated on by her fiancé and had the engagement broken off was drinking recklessly when she met a nice young man. After a series of coincidences, they become drinking buddies who get along well, and her spirits begin to lift. However, at her company, there is a woman who was seduced by her ex-fiancé and self-proclaimed best friend, keeping her stress constantly at its limit. Through her interactions with the nice young man, she begins to look forward again, and then comes an unexpected invitation to the engagement party. The two of them hatch a small scheme together.