In the sidequest "Helping Jaden" Jaden in Bavelock is irritated that Brock is always busy smithing his sword and will not open his blacksmith to customers, so he asks you to talk to Brock about it.

Brock tells you that he is working on a sword Climazzard and might finally be ready to show it to the swordmaster Argas. If Argas likes the sword then Brock is satisfied with it.You are given the sword and show Argas it. You enter battle with him and simply hit him with the sword one time.

Once you have shown the sword to him, Argas asks to see the sword in a real battle. So Luvannon summons a Gornak for you to fight. Defeat the Gornak to continue.

Return to Brock and he will say that he follows the words of Argas and takes the sword back from you and decides to open the blacksmith for customers. As a reward for doing all this he will add a status effect of your choosing on your old sword, for free.

Talk to Jaden again who will give you 25 Pix for the help.