I heard that her role in the new drama will be a trickster, maybe they chose Seohyun because she's the real trickster in her life. She tricked everyone that she was the innocent maknae of SNSD all these years, while the truth is that her hunger for cock and semen is even greater than her unnies.
Seohyun became independent of SM who took care of her everything about her, and established a one-person agency and now felt the need to actively attract customers.