[9] In 2019, Kim starred as the protagonist for the first time with MBC's school fantasy drama Extraordinary You, based on the Daum webtoon July Found by Chance.

[13] In the same year, she also confirmed to star in the 2021 pre-produced JTBC's television series Snowdrop, in which she reunited with the production team of hit drama Sky Castle.

[14] Near the completion of Snowdrop's filming process, Kim received the offer to star in 2021 tvN's historical procedural Secret Royal Inspector & Joy.

[19] After focusing her attention on the promotion and production of her two films, The Girl on a Bulldozer and Ditto throughout 2022, Kim returned to the small screen with 2024 tvN's time slip drama Lovely Runner.

"[23] In July 2024, Kim embarked on her "Hyeppiness" fan meeting tour, starting in Seoul and extending to international cities such as Yokohama, Osaka, Taipei, and Macau.

[24] Following the conclusion of her tour it was later announced that Kim was selected to star in the upcoming SBS' fantasy drama Human from Today, set to air in the first half of 2025.

[25] After her portrayal as Kang Ye-seo in the critically acclaimed television series Sky Castle, Kim earned the affectionate nickname "My Melody Princess" from Korean netizens and media outlets.