Melancholia (2021)

S1E9 Unlocking Yoon Su’s Heart

Seung Yoo is determined to help Yoon Su emerge from her emotional isolation, aiming to connect with her as she once did for him. Simultaneously, Yoon Su operates undercover, gathering proof of Noh Jung Ah's corrupt activities while concealing her true identity. As the threat of her exposure looms, Seung Yoo steps in to protect her, showcasing his commitment to their bond and his willingness to face any danger for her sake.