wait is this the story of the black and silver knight in the sica webtoon???!!

It is!! ヾ(❀╹◡╹)ﾉ~

eh how did they describe it on sica? the story of black and silver knight, and what chapter?

I don't remember the exact chapters, but they appear towards the end, because they go to help Sica defeat her brother/the dragon. There's a few conversations and I think there's one where Siri tells Sica how it when down between them.