If you had to pick Ahn Jae-wook's top 3 hit songs?

Ahn Jae-wook has been steadily releasing albums since his first one in '97.
"Forever" and "Friend" are definitely his two mega-hits that everyone knows as the go-to closing songs when singing karaoke among friends. Compared to those two, his other releases feel somewhat familiar and the rock ballad style is nice, but their recognition feels a bit ambiguous to call them "hits." Is it "Farewell"? Or "Dururu"?