He used haki to see them. Doflamingo along with his crew are collecting treasures, he seem to be restless as he didn't found the ope-ope no mi.
Law on the other side is doing his job by guarding Vergo who is dead. Doflamingo is not alert , Jack took this chance. He arrived behind him and pierced his heart , this all happened with a second.
At Awakening state , Jack is now as fast as thunder. He coated his hand with lightning which look like chidori. Doflamingo was not that strong but he was able move an inch in time.
Pica , Diamante and Trebol were shocked, " Doffy ". They shouted at him. Before daflamingo can use his moves, Jack used 200 million volts directly. He used haki to defend but fainted due to its power.
He turned his head to see Pica, Diamante and Trebol who were shocked. Before they could react ; Jack got near Pica used shigan with armament haki to pull his heart.
A haki user can identify other haki user. It seem like except Doflamingo and Diamante other two are only at basic level. Pica extended his hand to take his heart but Jack destroyed it. He collapsed next second.
Diamante recovered from earlier events. He saw Jack smiling at him ; used his devil fruit. Jack touched him with 100 million volts but front cape passed it to ground.
Diamante smiled as he was not injured, but soon was shocked. Jack pierced both eyes with his fingers. He shouted and rolled due to pain.
Trebol was scared ; he didn't understood what happened during these 5 seconds. He saw a man with a marine coat who is not even a vice admiral took down his family of elites. So, he used his last card.
" Do you know doffy identity ? ", Trebol asked him. Since everyone afraid of them he thought Jack would also be afraid. Jack didn't respond but saw Doflamingo finger moved.
Jack thought he died , but he is alive. Trebol tried to sneak attack. Jack lit a lighter and throw at him. Trebol screamed as his body was on fire.
" You should die ", Jack said to doflamingo. He spat out blood and wanted to say something. Jack didn't give a chance ; he made a lightning blade ; detached his head.
Jack got near Trebol ; who is panting ; as got away from the fire. Trebol now saw Jack blood covered on his hand and face with doflamingo head ; smiling at him.
He is now shivering. He didn't saw someone this ruthless ; even doffy won't be this ruthless. " How can miss a chance to kill a world noble ? ", Jack said smiling at him.
Now Trebol can understand it. He didn't kill him. He took a knife and stabbed diamante heat multiple times. Trebol used his sticky tried to attack him.
Jack again used fire , Trebol detached himself from that attack. Jack didn't undo his awakening. At this state , sparks comes from his body as his hair stands.
Except him all three are dead. " If you answer my question, you will have painful death ", Trebol was angry but agreed. " Where did you select the kids ? ", Jack.
Trebol was shocked because only his main members of crew know about it. " Its from grave island ", Jack cut his throat as he got the answer.
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Jack got normal and took his den den mushi. Other received it, " Hello, boss ". Jack sighed, "Do you know about grave island ? ". He was silent , " Its Jokers territory , we cannot go there ".
" Go there and expand members. Joker is dead. You may hear it tomorrow ", Jack said. "How can this be, who can kill Joker ? ", he was shocked. " Its me and Fang how is work ", Jack.
After that incident , Jack called them time to time to give orders for dealing with underworld. Now this organisation is next to Joker. They accepted him as leader.
" Its good ", Fang said. Fang also didn't thought they would be like this. They are grateful to him even if they know that he is using them.
" Did you heard about warlord system ? ", Jack asked Fang. Fang heard it but didn't want to join world government. " I know you don't like it, but it will give us benefits and they won't call you like soldiers. So, grab a ship and try to capture pirates ", Jack assured him.
" Give me some time ", Jack didn't insist as he knew how hard the decision is. " I won't insist it ", Jack said and stopped the call. He was running at the time when he started the call as he want to rush to the ship before Tsura arrives.
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Jack saw the warship was near the pirate ship. All the crew were frantic as they cannot contact their captain. He lowered his presence.
He want to take those 2 kids as they can be strong in the future. If they were taken by marines , they may lead them to prison. So, he is trying to abduct.
He first set the sail in fire. Seeing others rushed towards it , he knocked Baby 5 and buffalo ; carried them. He vanished and arrived in front of Law.
Law was confused seeing them. He wanted to ask about Corazon but Jack knocked him out. He went to swallow island thinking about what he should do with them.
He see a cave and throw them down. He first bind them with a rope . " Where is Corazon ? ", Law who woke up asked Jack. Baby 5 and buffalo were confused seeing a marine. They want to free from shackles to run.
Jack sighed and explained about doflamingo and his crew; he told Law that Corazon will be fine. They didn't bought his words. So, he showed doflamingo head as proof.
Now, Jack is confused . Should he left them to their fate or inform about them to Fang and make them join their crew. Jack also thought of making them marine.
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