The artist is SO good. The art in this series is super amazing, not many artists can draw action sequences like this. The story is pretty good too. All we're missing is a love interest now. Su-Hee retired so... maybe sister not related by blood?
Honestly I have a feeling its mimicry. First the connection with the previous fight referenced in the previous chapter. Second the red knights willingness to put aside its arms when the MC did first. Who's to say if the MC put aside his armor that the Knight wouldn't do the same. Then allowing the MC to rush in and materialize his dagger at the last second and use vital strike