Kirawaremono no Reijou wa, Watashi ga Aishimashou. Imasara Dekiai shitekitemo, Mou Osoi Desu!

Also known as: 嫌われ者の令嬢は、私が愛しましょう。～いまさら溺愛してきても、もう遅いです！～, I will love the hated daughter. Even if you dote on her now. It's already too late!

by Natsuki Aihara, Kureko Kureta

After dying alone, office worker Aki awakens to find her soul inside the body of a noblewoman named Isabelle, a girl from a powerful ducal family. Isabelle was known for being arrogant and hated by all— Her family ignored her, and even the one she loved coldly rejected her. She died unloved, with a shattered heart. But Aki, who also suffered from loneliness in her previous life, made a firm decision: "If no one else will love her… then I will." However, she soon starts noticing strange things about the people around her… Was everything she thought she knew about "Isabelle" really true? Or are there hidden truths that were never told?