Fiasse, a globally celebrated vocalist, now leads an exclusive Singing Academy that stages a yearly Charity World Tour. After her mother passed away, she inherited a legacy, drawing the attention of dubious figures seeking both Fiasse and the estate. Enter Ellis, along with two sword‑master siblings, to shield her. With the upcoming tour imminent, Fiasse will resume performing. Ellis, Kyoya, Miyuki, and allies vow to guard their lifelong companion at all costs, despite the looming danger and relentless pursuit, for safety and shared dreams.