ML also wears mask and also good at fighting.. Has a double identity. Both ML cares and protects the FL. FL is not a damsel in distress, both strong in their own way.

Both have strong female lead..
OMG female lead is strong at battles because she is the general..
GAI female lead is strong mentally because she is in charge of battle strategy during war.

Both have romantic relationship with royalty..
OMG female lead general is engage with the prince which is the nephew of the emperor.
GAI female lead was married to the prince which is the brother of the emperor.