Watashi ga Shinde Manzoku desu ka? Dare ga Koroshita Akuyaku Reijou

Seina Isolde is a socialite with a villainous reputation. She was accused of bullying the crown princess, taking advantage of her role as the crown prince's fiancee. When the scandal broke, their engagement was broken off, and she took her own life. But then, an anonymous letter claims that Seina Isolde was murdered. Aria, the prime minister's...