expression
A self-confident, emphatic way to say 'I' or 'as for me', often used when asserting oneself or taking a stand. Has a somewhat literary or dramatic feel; in casual speech, 私こそ or 俺こそ are more common.
我こそはこの国の王である。
I am the king of this country.
我こそは正義の味方だ。
I am the ally of justice.