The one speaking, as the object of an action. The word by which a being appears in its own account.
Old English me, the oblique form of ic (I), from Proto-Germanic *mek/*miz and the Proto-Indo-European first-person root *me-; the word by which a speaker appears as the object of their own account.
The speaker turned into the one something happens to — the same self, held from the other side of the sentence.