Watashi ga Shinde Manzoku desu ka? Utomareta Reijou no Shi to, Nokosareta Hitobito no Hametsu Nitsuite

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 daughter, is assigned to investigate. After she interviews the people involved, what emerges is a surprisingly picture of Seina. Seina had been used and exploited by the people around her, and she was forced to hide her true self and act like a villainess instead. Why did she have to die? And who sent the letter? As Aria searches for the truth, things take a dramatic turn…! (Source: Alphapolis, translated) Translated with DeepL.com (free version)

The news of the accidental death of Lady Rorona Ryus arrived just one day after her fiancé, the Crown Prince, had called off their engagement. Rorona had been condemned for crimes she didn’t commit—falsely accused of tormenting her younger sister—yet she had accepted the charges with startling indifference. They say her body was discovered inside an overturned carriage on a suburban road, her face crushed beyond recognition. Upon hearing of her death, Rorona’s sister rejoiced. “Now the Crown Prince is finally mine,” she thought. The Crown Prince merely laughed. “I wish she’d died sooner,” he remarked. However, they were blissfully unaware of one thing: Rorona’s death would bring far more than just “good fortune” to their doorstep… *Source: Alpha Manga*