[1] On September 30, 2014, Han officially debuted with the digital single "Making a new ending for this story".

[2] On April 15, 2015 After School’s Jung Ah and Han Dong Geun released their duet for Pledis Project "Parting", titled "Between Us".

[4] In 2016 he achieved resurgence in popularity through his participation on Duet Song Festival.

On December 20, 2019, he decided to not renew his contract and parted ways with Pledis Entertainment.

[5] A few days later, on December 26, 2019, he signed an exclusive contract with Brand New Music.