To My Beloved Enemy

Centuries ago, a mysterious entity named Shinyoung cursed Dongyi with immortality. Since then, Dongyi's sole purpose has been to take revenge, but killing an immortal being is next to impossible. After centuries of failing and killing Shinyoung over 500 times—only for him to resurrect with a smile every single time—Dongyi finds himself trapped in a strange, continuous cycle of life and death, cohabiting with his worst enemy while trying to find a way to end it all.