After Mira left the throne room, she immediately flew around Nirvana to inform her comrades about Ben's message. Some of them immediately did as she requested, while some wanted to continue their fight here. But some 'persuasion' from Mira convinced them to leave.
5 minutes passed and everyone left Nirvana, even the enemies. They are chasing the mages who leave in the middle of battle. So they chase the mages to finish their battles. Besides, they figured Brain was still on Nirvana, so they can leave it for the time being.
Unfortunately, the one on Nirvana wasn't Brain, but Ben. Brain had been teleported out of Nirvana and tried to get on it again but he was stopped by Mira after she was done informing her comrades. She now fought Brain under Nirvana which was in motion.
In the control room, Ben was sitting on the throne with his eyes closed. Then he slowly opened his eyes and took a deep breath before exhaling. He is ready to start his plan now.
"You guys ready?" Ben asked his clones through their mental connection.
"Anytime." His clones replied.
"Let's do it, melt this thing." Ben said.
Ben's clones touch the giant lacrima crystal and their magic power flowed into it. The clones' bodies suddenly glow bright red and they become very hot. They are using Heat Magic and it flowed into the lacrima crystal.
Ben also did the same thing in the control room through the control link. He and his clones are using their and use the lacrima crystal to help them. The lacrima crystals are connected to every part of Nirvana, so their magic can cover all of Nirvana.
The plan went well because Ben calculated with A.I Chip's help. His Heat Magic spread on every part of Nirvana from top to bottom. Soon, Nirvana started to glow red as well as it was heated up.
Slowly, Ben and his clones raise the heat that caused Nirvana to glow bright red as it got hotter. The others now see Nirvana glowing red and they feel the temperature around Nirvana increasing. They didn't know what happened to Nirvana, but Brain quickly figured it out.
"NO WAY! THAT BRAT WANTS TO MELT NIRVANA!?" Brain shouted with widened eyes.
"It seems to be the case." Mira said as she attacked Brain in her Satan Soul form.
"THERE'S NO WAY I'LL LET THAT HAPPEN!" Brain angrily yelled as he blocked Mira's attack and struck her with a stronger spell.
Mira was hit by the attack and flew back fast, crashing into some trees. Brain chased after Nirvana and got on it again to stop Ben, but Mira attacks him from afar. There was no way she was going to let Brain get back on Nirvana and disturb Ben now.
"You're not going anywhere." Mira declared as she changed into Satan Soul: Halphas.
Mira kept attacking Brain to make sure he didn't get to Nirvana. So Brain ordered his subordinates to get on Nirvana and stop Ben. His subordinates were surprised to hear he was no longer on Nirvana.
They want to follow his order immediately, but their opponents were attacking them. The ones that can reach Nirvana aren't able to touch it because it's very hot. Even the ice mage couldn't cool it down with their magic.
Nirvana's temperature had reached 1500 degrees Celsius now. But it's still moving like before, showing it's durability. The temperature kept rising significantly and Nirvana glowed brighter.
Some areas of Nirvana have started to catch fire. The fire appeared here and there, but the main system is still working. Nirvana still worked even when it was on fire. No wonder Roubaul wasn't able to destroy it in the past.
Nirvana got so hot that when it's legs touched the trees, they caught fire immediately. Gray and Lyon who finished their respective battles are now working to put the fire out before the forest was burned down with their Ice Magic.
On the other hand, Natsu was very happy that so many trees had caught fire. Now he flew around the burnt trees with Happy's help and sucked up the flames. Cobra was a strong opponent and he needed to replenish his magic power, so this was a blessing in disguise.
Soon, Nirvana's temperature reached 2500 degrees Celsius. It was beyond the material's ability to handle and Nirvana started to slow down. It finally stopped moving after it reached 3000 degrees Celsius and it falls.
But Ben continued because Nirvana hadn't been destroyed. It needed to be destroyed completely so no one can study it and construct a new version from the remains of this thing. He kept raising the temperature slowly so the lacrima crystals won't break.
It reached 4000 degrees Celsius soon and no one could approach Nirvana even if they protected themselves with magic. Natsu, a Fire Dragon Slayer, couldn't approach Nirvana because it was too hot for even him to handle.
To keep the heat from destroying the forest, Jura used his magic to create tall earth walls that surround Nirvana. But he needed to make the walls very thick because the heat can pass through the thin walls.
Finally, Nirvana's body started to melt when it reached 5000 degrees Celsius. It's almost as hot as the surface of the sun, which meant that it was very, very hot. It was so hot that the ground around Nirvana started to melt and turned into lava.
"Such immense heat, even my walls have started to melt. But was this really necessary?" Jura asked.
Nirvana is melting now fortunately Jura's thick earth walls prevent the molten material from spreading. His walls are acting like a bowl to hold the molten material.
"When will this end?" Jura asked as he strengthened the walls.
Well, Ben was already done, but he was now trapped on the melted Nirvana. He is standing above the red hot liquid without anything on his body, a.k.a naked. His clothes had burned off when he reached 4500 degrees Celsius.
Ben is fine in this extremely hot environment because he had a high tolerance to heat. If he can make his body reach 5000 degrees Celsius without being able to survive, having this ability would be pointless.
"I hope no one can see me." Ben said as he looked around.
Right now, he was standing above the molten lava and didn't even sink because he used his Gravity Magic to significantly reduce his weight. He can walk on the lava with little difficulty except feeling like the ground is foam.
Ben went to the side and then climbed down Jura's earth wall. He wore a set of clothes on the top while looking at the melted Nirvana. His magic power had been reduced significantly after melting Nirvana.
He had gone as far as melting Nirvana when he could just destroy it by destroying the lacrima crystals. It's all for the sake of eliminating Nirvana. He should be happy, but found himself unable to feel that after knowing what would happen later.
He looked at the sun that had disappeared on the horizon. Ben had a sad expression on his face as he looked at the sunset which didn't look beautiful at all. Sunset had never felt this bad to him.