Transmigrated into an ABO novel as the villainess (GL)

Sypnosis

Kim Hae-yoon woke up one day as the empress of a galactic empire called Starfall Dominion. Armed with memories from her past life and the previous empress, she realized she's stuck in a novel, playing the villain.

As the tyrant empress, she forced the heroine, Cho Shiye, into marriage, despite knowing she was in love with her cousin, Kim Yun-hee. She sent her cousin on a deadly expedition, hoping for her demise, and subjected the heroine to unspeakable acts.

When her cousin returned, she led a coup, killing Kim Hae-yoon and taking her place as empress, living happily ever after with Cho Shiye.

With the memories of the previous owner, it was revealed that her cousin was actually a scumbag who only got together with the heroine as a form of revenge towards Kim Hae-yoon.

Upon realizing that she's actually a scumbag, Kim Hae-yoon was determined to changed her and Cho Shiye's fate. She tried her best to become a good wife towards Cho Shiye and planned to divorce her soon after she found someone she loves aside from that scumbag.

Discovering that Cho Shiye had moved on and was in love with someone else, she prepared their divorce but Cho Shiye not only tear the divorce papers, she also pinned her against the wall and spoke in a low tone of voice, "Mark me."