as far as ... is concerned; so far as ... can tell
Used to limit a statement to a particular topic or perspective. Follows a noun or noun phrase.
See also: 関する
As far as I'm concerned, I'm against the plan.
As far as the weather is concerned, tomorrow looks fine.
Standard kanji-kana mixed spelling.
Kana spelling of 限り; slightly less common but still used.
Combination of に (particle), 関する (verb 'to concern'), and 限り (noun 'limit'). Literally 'as far as it concerns'.