"Young Master! Something's happened!"
"Hmm! Listen to me, the auction started off smoothly today, with bids much higher than usual. But right at the payment stage, a mysterious man in black robes attacked the instant I opened the treasure vault door. He sent everyone flying and then forcefully pulled open the special metal bars..."
"Yes! It seemed effortless, and then... yes, then that person entered the treasure vault with incredible speed, we couldn't stop them at all, and then they closed the door from the inside. I'm having them unlock it now so we can capture that person!"
"What? It can't be opened? Why?"
"We can't beat them? What do we do then? Will you come over in person?"
"Lord Rao G is in charge of today's auction. Don't you know what's on the list?"
"It's the Lucky-Lucky Fruit, the Mirror-Mirror Fruit, and the Warp-Warp Fruit!"
"Isn't it open? We don't need to wait for you to come?"
"Yes, I understand! You guys, don't unlock it yet!"
Sure enough, the host was calling Doflamingo. Although it's unclear what Doflamingo said, the host's words gave a general idea.
Doflamingo seems to have some self-awareness; after learning about the Devil Fruit inside the treasure vault, he appears to have given up on arguing with the robbers. Is he going to suffer in silence? Or does he know that the people inside the vault can use their Devil Fruit abilities to leave at any time and therefore don't want to make the trip?
"Ladies and gentlemen, as you just witnessed, a thief broke into the vault where your auction items are stored. This thief is quite powerful, so to prevent him from harming you, our boss has decided not to open the vault until the thief starves to death inside."
If you really like what you bought today, you can still purchase the items at today's prices once the treasure vault opens. If you miss out, we will re-auction the items. So, we apologize, but you can't take your items with you today. Please keep an eye on the information posted in our auction house!
Starving that mysterious person to death would certainly be the best outcome, but this would only happen if that mysterious person was already a power user beforehand.
However, judging from that person's performance, he didn't seem like a Devil Fruit user. He hadn't used any Devil Fruit abilities at all, and the move that sent everyone flying was just the effect of Armament Haki being released.
Moreover, the person closed the door as soon as they entered the treasure vault. This was definitely not done to prevent others from going in and causing trouble. If this person were truly a power user, they would never cut off their own escape route!
If you take what you want, you can simply use your strength to break out. There's no need to lock yourself inside unless you're strong enough to destroy the treasure vault, in which case you wouldn't have to worry about being trapped inside.
Otherwise, there's only one possibility: this person was after the Devil Fruit Devil Fruit, hoping to use it to leave the treasure vault unnoticed. So, Doflamingo knew things were probably hopeless and decided to leave without opening the door, leaving a glimmer of hope.
The one who suffered the most was Katakuri. He was only one step away from the Mirror-Mirror Fruit, but that one step always turned into countless mountains and rivers blocking his way. Even if that mysterious person wasn't after the Mirror-Mirror Fruit, he wouldn't miss this valuable Devil Fruit if he could leave. So this trip was definitely in vain!
Following Katakuri is the host. He's worked for nothing today, lost all his bonus, and things went wrong. Even if it wasn't his fault, he can't avoid being implicated, and it will definitely affect him.
Tesoro was alright. Although he really wanted the Lucky-Lucky Fruit and was a little annoyed that the deal couldn't be completed, he couldn't blame him for leaving him a message before the mysterious person started causing trouble.
The man was kind to him, and he would still have a chance to get the Lucky-Lucky Fruit whenever they met, so he wasn't entirely hopeless. As for the other customers, they had even less to lose since they hadn't paid yet and hadn't suffered any losses. They'd even gotten a good show, so it was worth it!
Tesoro was the first to leave. He still had to go to the area where slaves were imprisoned to pay for Baccarat. When he arrived at the area where slaves were imprisoned, he saw the female Celestial Dragons with soap bubbles on her head leading the old man with white hair and glasses away!
After the three passed each other, Tesoro curled his lip and spat. In his eyes, this female Celestial Dragons only wanted men and didn't care about her brother and father. Her brother and father were still unconscious there, and this woman only knew how to enjoy herself. And that old man, she really didn't discriminate between meat and vegetables!
Of course, Vic didn't need to use the Mirror-Mirror Fruit or the Warp-Warp Fruit to leave the treasure vault, nor did he need to rely on great strength to leave. The elemental transformation of the Rumble-Rumble Fruit allowed him to quietly leave through the walls of this metal treasure vault!
Everyone knows that metals conduct electricity. The fact that he didn't use his Devil Fruit powers to enter the treasure vault, and then immediately closed the door after entering, was all to avoid revealing his identity.
He only needs to do two things now: lie low and become stronger. Lying low requires keeping a low profile. Even if he can sweep through with his strength, he doesn't necessarily have to do it. People have brains, and they need to use them. They can't be left idle.
Furthermore, Vic possesses Dimensional Space capable of taking everything. When Doflamingo opens the treasure vault and sees the vast, empty vault where even thieves would leave something behind with tears in their eyes, his suspicions will undoubtedly be firmly focused on the person using the Mirror-Mirror Fruit or the Warp-Warp Fruit.
The treasure vault was completely intact, and not a single item remained. He wouldn't believe it was someone else who did it, though Blueno, the Door-Door Devil Fruit User from CP9, could certainly do it too.
But if Blueno really wanted to do that, he wouldn't have needed to choose this time at all. He could have simply opened the door to the vault from the outside when it was quiet at night and taken the contents without alerting anyone.
Another point is that Blueno simply doesn't have that much strength. How could someone who doesn't even Haki Emission? Besides, if Doflamingo really suspects Blueno, it wouldn't be a bad thing for Vic; the more suspects the better.
When Vic left the treasure vault with everything, the host was still on the phone with Doflamingo. Even if Doflamingo had been a little reckless and made the host open the vault immediately, he wouldn't have been able to see anything. Vic's actions were quick enough!
After leaving the auction house, Vic sensed the entire Sabaody Archipelago and found Dragon waiting for him.
"Here you go! This is your Warp-Warp Fruit. Don't leave yet, let's go to area 50 and wait for someone."
"Haha! This auction finally yielded some results, it wasn't a wasted trip! Who are you waiting for?"
"It's not that I'm waiting for anyone, it's you! Don't ask who it is yet, you'll know when you see him."