Now, what happened was not maybe what you thought, which is, he suddenly became passionate, engaged, involved, got a new teacher, he hit puberty, or whatever it is.
이런 변화가 어디서 올까요? 갑자기 피아노와 사랑에 빠졌다거나, 새 선생님이나, 사춘기를 만나서가 아니에요. 강박의 숫자가 줄어든 것 뿐입니다.