For USD/JPY, the average liquidity in pre-COVID market conditions is about double the average liquidity in recent market conditions.
In the recent market conditions, the average liquidity for USD/JPY is highest around Sydney close. This is different to pre-COVID market conditions when the highest average liquidity is observed around Tokyo close and London open.
Liquidity in USD/JPY drops off sharply between 13:00 and 14:00 GMT (going into London close and New York open) in the recent market conditions, relative to pre-COVID market conditions.