conjunction
just because; even so; that doesn't mean
Used to introduce a contrast or limitation: acknowledges a preceding statement but denies that it leads to an obvious conclusion. Often followed by a negative or limiting phrase.
彼はお金持ちだ。だからと言って、幸せとは限らない。
He is rich. That does not necessarily mean he is happy.
He apologized. Even so, I cannot forgive him right away.