In late October of 2019, Suhwan started his own Youtube channel. He has been mainly posting dance and song covers.
In April 2020 Suhwan made an official fundraiser for his upcoming debut. He stated that there is not goal to the fundraiser as the single will be produced no matter how much is raised, this is just to help his costs during the COVID-19 time.
In July 2020 Suhwan announced the establishment of his own agency, LYNNA Entertainment, and announced a pre-debut single to be released in August. On August 20, 2020, Suhwan released a pre-debut ballad single titled "Starry Night".