Well... [Jaskier says, gesturing wide with his arms and smiling almost just as wide.] I warned you, didn't I? I needed to see how well you could do and the only way to do that was to really push you to the limit and see if you could hold your own.

[Not that Gokudera was really in any danger of Jaskier not taking him on as a partner of sorts anyway. It's not as though there were likely many options to choose from to begin with if one were to be less charitable and more pragmatic. Given that Jaskier is far from pragmatic though, it's more that he would be willing to augment his style to meet Gokudera where he's at and go from there.]