An So-yo joins tvN's 'Tomorrow, I'll Go to Work!' opposite Park Ji-hyun and Seo In-guk

An So-yo is joining tvN's Tomorrow, I'll Go to Work! (내일도 출근!). King Kong by Starship confirmed the casting on June 19.

The Monday-Tuesday drama follows Cha Ji-yoon, a seven-year office worker stuck in the grind of daily routine, who finds new excitement in work and love after crossing paths with her blunt boss Kang Si-woo. Park Ji-hyun plays Cha Ji-yoon. Seo In-guk plays Kang Si-woo. Kang Mi-na and Choi Kyung-hun round out the cast.

An So-yo takes the role of Lee Hye-ji, Ji-yoon's university classmate who is now raising a child. The character is warm and approachable—the kind of friend who gives honest, no-nonsense advice. It's a shift from her recent work. She played the head of the Seoul Metropolitan Police Agency's criminal behavioral analysis team in the Disney+ original Nine Puzzle, and a psychiatrist in the Genie TV original To My Harry. Her broader credits include The Glory, Namnam, Pyramid Game, Vinyl House, and Citizen Deok-hee.

Her agency says to expect An So-yo "in a different light" this time around, with natural best-friend chemistry alongside Park Ji-hyun as the draw.

Tomorrow, I'll Go to Work! premieres June 22 at 8:50 PM on tvN. Global viewers can watch via Amazon Prime Video.