YOU SAID:

My power first emerged while I was having an argument with my father.

INTO JAPANESE

私の力は、父と口論しているときに初めて現れました。

BACK INTO ENGLISH

My strength first appeared when I was arguing with my father.

INTO JAPANESE

私の強さは、父と口論していたときに初めて現れました。

BACK INTO ENGLISH

My strength first appeared when I was arguing with my father.