Wakako, who was entrusted with choosing a drink for Abe-chan's father's 60th birthday celebration, came across a liquor store. There, she saw a sign that said "Kaku-uchi welcome." She tried out the kaku-uchi, which is located in a corner of a liquor store, for the first time! She chose the sake that was requested, Ume Suisho, which is a drinker's choice, and it was a hit. Wakako was captivated by the charm of kaku-uchi. She was delighted by the positive reception of the sake she chose and the gratitude from people close to her, so that night she chose fried eggs...