[7] On October 26, 2018, it was confirmed that Miyeon would perform at the League of Legends World Finals Opening Ceremony 2018, along with Soyeon, Madison Beer and Jaira Burns.

The four singers provided vocals for the virtual K-pop girl group K/DA, with Miyeon voicing Ahri, one of the most well known champions in the League of Legends.

[9] In 2019, Miyeon collaborated with Hangzoo with the song "Cart" as part of Amoeba Culture X Devine Channel Code Share Project.

[13] In September 2020, it was revealed that Miyeon would make her acting debut as the female lead in web-drama Replay: The Moment as Yoo Hayoung,[14] a popular YouTuber and band vocalist.

[20] In the same month, Miyeon was appointed as one of the new hosts of Mnet's music program M Countdown, a position which she held from February 18 with actor Nam Yoon-su.

[21] On the day of their first broadcast, the pair prepared a special stage as they sang a duet song "Dream" by Suzy and Baekhyun.

[23] In May 2021, Miyeon appeared on Kingdom: Legendary War as a hidden card to help BtoB's "Blue Moon (Cinema Ver)" No Limit stage.

The album is produced by Jeon Chang-sik, the CEO of CS Happy Entertainment recognized Miyeon's potential and lived up to his expectations with her unrivalled singing skills that have not been revealed yet in (G)I-dle.

[27][28] In August 2021, Maeil Business Newspaper reported that Miyeon would be acting alongside The Penthouse: War in Life actor Lee Tae-vin in the action comedy web series Delivery, which was released in November 2021.

The singer is said to appear in this web drama to help local small and medium-sized enterprises during difficult times due to COVID-19 in the Gyeonggi Province and the production staff stated, "to look forward to wire action from Cho Mi-yeon".

It was described as a medium-tempo synth-pop song with witty lyrics that expresses the emotions felt by the person in love as a side effect.

[32] The same day, she was confirmed to star in the upcoming pink comedy web series Adult Trainee as Bang Ye-kyung alongside Ryu Ui-hyun.

[38] On September 5, 2023 Yuqi and Miyeon released the single "How to Twerk" as part of the soundtrack of the Mnet dance competition show Street Woman Fighter 2.