expression
from now on; in the future; further
Polite or formal expression used to indicate continuation or further effort from this point onward. Often appears in set phrases like この上ともよろしくお願いします.
この上ともご指導のほど、よろしくお願い申し上げます。
I look forward to your continued guidance from now on.
この上とも変わらぬご愛顧を賜りますようお願いいたします。
We ask for your continued patronage in the future.
Phrase composed of この上 (kono ue, 'on top of this; furthermore') + とも (tomo, 'even; also'), literally 'even from this point onward'. The exact historical derivation is uncertain, but it functions as a fixed formal expression.