こころのどこかで
deep down; special place in one's heart; in the back of one's mind
Also written 心の何処かで
Expression
彼かれの言葉ことばは正論せいろんだったが、僕ぼくは心こころのどこかで引ひっかかりを感かんじていた。
Even though what he said was sound, I still wasn't completely convinced.