[10] Kwon has continued to promote as a solo artist under the name 10 cm, releasing the album 4.0 in September 2017[11] and several singles, including the Gaon Digital Chart top-ten hits "Mattress" (2018), "However" (2019), and "Borrow Your Night" (2021).

As Jeongyeol gained some local fame with his singing skills, Kwon was finally allowed to perform in Yoon's band.

[14][a] After enlisting in the South Korean military, the two formed the band 'Seven Hills' named after the army unit they served in, called 'Chilbong'.

The band's early activities involved playing the djembe which was influenced from performances of Jason Mraz and Toca Rivera.

[20] Also while the production on 1.0 was minimalistic, the range of different instruments used on 2.0 increased, and different genres such as modern rock and tango were also explored.

[24] On March 9, 2022, Kwon donated ₩20 million to the Hope Bridge Disaster Relief Association to help the victims of the massive wildfires that started in Uljin, Gyeongbuk, and also spread to Samcheok, Gangwon.