He participated in their pre-debut show Me and 7 Men,[4] before he debuted in Plan A's new group, officially named Victon in November 2016.

[6][7] In January 2021, for Victon's first full-length album Voice: The Future is Now, Do released the solo song "Where is Love?"

[8][9] In March, Do appeared alongside groupmate Heo Chan as a model for designer Jang Yoon-kyung's brand SETSETSET at the Fall and Winter Seoul Fashion Week, after both appearing as models in the Spring and Summer Seoul Fashion Week of 2020.

[13] In October, Do, alongside group members Kang Seung-sik, Heo Chan, and Lim Se-jun, participated in a charity project with Good Neighbors for the International Day for the Eradication of Poverty.

[14] In March 2022, Do featured in the song "Seventh Floor" from Korean indie artist Kim Mi-jeong's EP Volume Up!.