In tvN's new Monday-Tuesday drama 'Delightfully Deceitful,' Yoon Park plays a mysterious probation officer who protects Chun Woo-Hee.

The upcoming drama showcases the exciting teamwork between an empathy-deficient con artist and an overly empathetic lawyer as they seek revenge against absolute evil. Yoon Park's character, the quiet probation officer Ko Yo-Han, raises anticipation with his stills released from the drama.

In the show, Ko Yo-Han, played by Yoon Park, has a unique impression with his mysterious, suspicious gaze and maintains a monotonous expression in every situation. He dresses casually, speaks his mind, and often meddles in others' affairs. His provocative conversation style, whether dealing with ex-convicts or civilians, is his trademark.

Ko Yo-Han appears to live a lukewarm life without hobbies or a significant other but accomplishes his missions chillingly well. He leads ex-convicts on the path of rehabilitation based on three beliefs: "Humans are adaptable," "Humans can change," and "Humans need probation."

His approach makes some ex-convicts shiver with fear while others credit him for their redemption. As a result, the mysterious aspects of probation officer Ko Yo-Han's rehabilitation project become even more intriguing.

Ko Yo-Han is assigned a new probation subject, Lee Ro-Woon (played by Chun Woo-Hee). As always, he closely engages with her life with unwavering devotion. Now, his goal is to prevent Lee Ro-Woon from getting involved in criminal activities.

However, Lee Ro-Woon has a grand plan to con others for revenge. The audience becomes increasingly curious about whether Ko Yo-Han can rehabilitate the empathy-deficient Lee Ro-Woon.

Yoon Park's transformative acting in tvN's new Monday-Tuesday drama 'Delightfully Deceitful' is highly anticipated. The first episode airs at 8:50 PM on May 29 (KST).