No More Regrets, Just Kill Me summary:

Tsukishiro Yuina, a singer who lost her voice in a traffic accident. In her despair, she chose to end her life, but when she woke up, she found herself in the world of the novel The Saint Abandons Her Status, which she had read before her death. Yuina had possessed the body of the villainess, Ariadeline, at the exact moment when the protagonists had already united, and Ariadeline had been condemned.Even in the novel, her miserable circumstances hadn't changed, and Yuina (now Ariadeline) tried to end her life again, but she was stopped by her former husband, Carlothian.'I don't want to let you die.' Even though he was the one who killed Ariadeline in the novel, Carlothian kept interrupting and stopping her attempts to take her own life. Why won't you kill me like you were supposed to...?This is a love story of misunderstandings and second chances between Ariadeline, a villainess who has lost her dreams, and her tsundere ex-husband, Carlothian.