 Lee Dae-Heon then made his professional debut for Hiroshima in the AFC Champions League on 13 March 2013 against Beijing Guoan at the Workers Stadium in Beijing.He came on as a 68th-minute substitute for Kohei Shimizu as Sanfrecce Hiroshima lost the match 2–1.On 3 January 2014 it was announced that Lee Dae-heon had been loaned out to J2 League side V-Varen Nagasaki.