I hope the guy won't say something in style "I like them young! And I wanted to do you in time so I visited" or something like that
But really the guy seems to be surprised too, so maybe Bern's mother didn't tell him, and she told to Bern she had a great knight father while in reality he was just a failure who knocked a girl up by accident...
Would strip some delusions, not Grant the Geat Knight, but Grant the Nobody.
But then again that old knight seemed to know him, and his fighting style to suggest Bern to go after him for second sword...
A farce for Bern to learn the truth?
We see in cover that the guy uses one sword, not two.