The sub-unit includes members Yves, Gowon and HyeJu,[8] and their EP, Beauty & the Beat, was released on May 30, 2018,[9] reached number 4 on the Gaon Album Chart.

[23] In March 2021, Chuu was a regular panelist in the Channel A show Steel Troops where she comments on teams from Korea's armed forces competing against each other.

[29] She participated in the reality documentary show Law of the Jungle for the episodes titled "Spring Special in Jeju".

[30] At the end of 2021, Chuu filed an application for a provisional injunction against her agency, Blockberry Creative, to suspend the exclusive contract.

Blockberry Creative refused to reveal evidence concerning the rumors of power abuse to the public,[37] facing criticism and skepticism from fans, with some industry professionals who had previously worked with Chuu questioning the allegations made against her.

[38] On December 5, Chuu released "Dear My Winter" with South Korean R&B singer George as part of Lotte Shopping's "Songs for You" series.

[1] On September 18, ATRP announced that Chuu would be making her debut as a solo artist on October 18, with her first extended play Howl and the lead single of the same name.

[45] On August 2, it was announced that Chuu would be returning to acting in the fantasy romance drama My Girlfriend is a Real Man, based on webtoon of the same name.

[46] On December 28, 2022, Chuu announced through her YouTube channel that all proceeds from the merchandise sold at the Jiwoo store were donated to the Korea Music Power Plant to improve the welfare of musicians.

[47] In February 2018, Chuu graduated from Hanlim Multi Art School alongside her Loona groupmate Kim Lip.