Sword Chest

According to the Thief Charger, they went to Nocturn Yard by accident when you blocked the road. So they hid the stolen box under the ruins there, and then we captured them.
Their confession is a bit suspicious, but it's worth inspecting that area. What? You'll go there? After all, you are the actual owner of that thing. If you find the <HFFFA7272>Sword Chest<HFFFFFFFF> at <HFFFA7272>Nocturn Yard<HFFFFFFFF>, take it straight to the <HFFFA7272>Mathematician Genius south near the city plaza<HFFFFFFFF>.

That child is longing to get that box, so you'd better hurry up. Find the <HFFFA7272>Sword Chest<HFFFFFFFF> at <HFFFA7272>Nocturn Yard<HFFFFFFFF> and take it straight to <HFFFA7272>Mathematician Genius<HFFFFFFFF>, just <HFFFA7272>south near the city plaza<HFFFFFFFF>.

This is indeed the box I was looking for. It was made for me by Bulcan. Let's see if the sword was kept safe.
Look! The Sword is gone!
What's this note about? It says: It's too early for this Sword to become yours. What in the world is this? We were fooled!

But we don't have any other clues. We'll have nothing to say to Centergoras at Delfaras. This is a defeat of exponential proportions!
You have been through so much this far, but I will find the Sword some day and I hope that when that time comes, you will help me. Thank you.