The saddest Korean song, popular and nice. Oh, which baby can provide several songs?

A girl I love deeply; Never enough; Stay with me; Do you miss me? Tears: I still like you; Wounded love; The first snow; Beethoven's sadness; Happiness of growing up: going to Disney alone; I didn't understand until the last moment; People who fall in love with others; The taste of summer; The moon in July; Huaiqiu; Talk about it; Time and Stop Love; "You are not really happy" and "I want you to know"; Say you love me again

Understand the loneliness of love; Our Memories, Love in Exile, We'll meet again. If it sounds good, please adopt it. Thank you.