이 모든 건 우연이 아냐

All this is not a coincidence

그냥 그냥 나의 느낌으로

I know it just because, just by my feeling

온 세상이 어제완 달라

The whole world is different from yesterday

그냥 그냥 너의 기쁨으로

It is so just because, just with your joy

니가 날 불렀을 때

When you called me,

나는 너의 꽃으로

I became your flower

The particular sentiment, as explained in  the lyrics of 134340 , has its roots in one of the most famous poems in Korea,  The Flower by Kim Choon-soo .

기다렸던 것처럼

As if we have been waiting,

우린 시리도록 피어

we bloom painfully beautifully

어쩌면 우주의 섭리

Perhaps it is the providence of the universe

그냥 그랬던 거야