虜ノ歪 ～音大卒の元歌姫が響かせる淫らな啼き声～

Yuusaki Shion, the manager of Café&Bar Amulette, runs the establishment left to her by her parents, who died some years ago, and lives with her sister Kanon. About two years ago, they began living with their cousin, Uzuki Hina, who had arrived to attend a local university.

After Shion graduated from a musical college, she worked as a professional singer, but after her parents passed away, she focused all of her attention on managing the café. She was spending these hectic but somewhat happy days, and so only one month was left before the annual charity performance hosted by her childhood friend Minato Nami started. Nami, like her mother, had been good friends with her since they were children. Shion and her parents have also set up a food stand to support their concert. The time before the concert was busy for Shion, so she decided to hire a temporary cook.