Common lines/themes (paraphrased):
The opening lines often translate to a memory of childhood or a vow made under a young sun. The “reason” begins here: it is the inability to go back . The song’s protagonist is not asking why they fell in love, but why that love must now exist only as a ghost. The English lyrics carry a distinct ache of retrospection—every word is colored by the knowledge of what is to come. The reason for the autumn in the heart is the realization that the spring of their story is irretrievably over. reason ost autumn in my heart english lyrics
The song begins with a realization of separation. The singer acknowledges that the person they love is becoming a memory. However, the core of the song rests in the chorus, where the singer admits that even though the relationship is ending, the love remains static and unchangeable. The English lyrics carry a distinct ache of