Hye-Seong, a remote island boy, forms a unique bond with Yun-Hae, a mysterious mermaid, only to be separated when he moves away. Six years later, Yun-Hae finds Hye-Seong again, but her deep attachment soon turns into a dangerous obsession.

Their childhood friendship was a lifeline for both Hye-Seong and the secretive mermaid, Yun-Hae. After Hye-Seong's departure, Yun-Hae develops a mysterious power, driven by her yearning to reunite with her only friend.

When Yun-Hae finally locates Hye-Seong, too much has changed. His inability to dedicate himself to her as before ignites a chilling transformation in Yun-Hae’s attachment, escalating their reunion into a tense psychological drama with a supernatural thriller edge.

To Drown In You: A psychological romance manga where a mermaid's childhood bond with a human boy spirals into dark obsession.

To Drown In You, Hye-Seong, Yun-Hae, mermaid, psychological romance, supernatural, drama, thriller, obsession, complete series