expression
on the other hand; at the same time
Used to introduce a contrasting or balancing point, often after stating a positive or negative aspect. Similar to 'on the other hand' or 'but at the same time'.
この仕事は給料がいい。その反面、残業が多い。
This job pays well. On the other hand, there's a lot of overtime.
彼はとても親切だ。その反面、少しおせっかいなところもある。
He is very kind. At the same time, he can be a bit meddlesome.
Phrase composed of その (that) + 反面 (the other side, the opposite aspect).