The Captain went to where Ly Sushang was being held, going to rescue her before Ai-chan reached her. When he arrives, the box which Sushang was locked in is broken. Not far from it, he sees Sushang is being carried by someone who is running away from here.

"Sushang!" - He shouted, the person turned around, with an unconscious Sushang on his back.

"..." - The person who is carrying her, finally the Captain recognized him, it is Y/n L/n of this world, no wonder why the voice before was too familiar, he just hasn't contacted him for a while.

"Y/n? What are you doing?" - The Captain forgot that this isn't the Y/n that he knew.

Y/n turns around and runs away with Sushang.

"Stop!" - The Captain runs after them, Ai-chan breaks through the wall and gets inside this area, meeting the Captain again.

"Ah... Captain, what are you doing here? If I recall correctly... You are not a whale yet right?" - Ai-chan said as she approached the Captain. The Captain cannot escape from her in his current state, unfamiliar with where he is standing, not armed, not even having any divine keys with him this time.

"Whale, Captain, join everyone else."

Ai-chan said as she took out a handful of crystals, going to give it to the Captain.

"Hey cabbage!" - Y/n's voice appeared once again.

Ai-chan looks over to where the voice is coming from, he sees Y/n is standing there, holding a rainbow crystal, it is radiating some sort of energy that Ai-chan stunned for a second when she sees it.

Ai-chan summons the buff cabbages.

"Get him bois!" - Ai-chan yelled, as she flew up to get the higher ground.

"14th Divine Key, Ultra Crystal, activate your 3rd form." - Y/n said as the energy aura of the crystal on his hand expanded, to a larger scale to the point it surrounded the buff cabbages, Ai-chan and the Captain.

The Captain remained unharmed by the aura of the Divine Key.

Ai-chan felt her power was being drained out, she couldn't stop it so she ran outside as fast as possible. Her buff cabbages decayed and vanished into the air.

"What the..." - Ai-chan looked back to him, seeing that the Divine Key on his hand is too dangerous, she fell back in case he starts to attack again.

Y/n ran away with Sushang again, the Captain went after them, on the way he found his Divine Keys and managed to get them back without losing traces of Y/n.

This whole base is down, there's no saving anymore, Ai-chan is wrecking chaos and turning more people into whales as the story goes on.

After like 2 minutes of running, The Captain witnessed Y/n leave with Sushang on a truck, he panicked as he couldn't catch up, he took a deep breath, looked around, saw a motorcycle, he rode it and went after them. 

10 minutes after chasing after them, into a small, abandoned town, the Captain sees the truck parked on the sidewalk, with Y/n sitting on a chair in the middle of the road waiting for him, no sign of Sushang around.

"..." - The Captain stops, he parks the motorcycle on the road. Approaching Y/n with caution.

"When was the last time we hanged out together? 10 or 20 years?" - Y/n asked.

"I am not him." - He said.

"Does that matter?" - Y/n asked back.

"... 7 years, 2 months since we last met, we kicked ass together back then, until you disappeared so suddenly." - The Captain said, sadness rises in his heart.

"Huh." - Y/n stands up, picking the chair up and throws it into the sidewalk. "Well, that's unfortunate."

"Where's Sushang?"

"She's in there." - Y/n points to a small house on the streets. "The Binding drew her strength."

"I suppose I should say thank you, for not killing her?" - The Captain asked.

"Your choice."

"What do you want?" - The Captain asked.

"Nothing much, seeing an old friend of mine, that has died. You're not him, but you're him at the same time." - Y/n said with a smile.

"..."

"About this..." - Y/n takes the crystal out. "It took me a great price to get it, and to use it."

"I will need that."

"But I can't give it to you that easily." - Y/n puts it back into his pocket. "This Divine Key is created for these kinds of events. Even I can't stop her, you think you can?"

"Yeah, sort of, just give me."

"There's only one way of getting it."

"I was thinking the same thing."

The Captain draws the Judgment of Shamash out and points it at Y/n. Y/n pulls the Key of Sanction in its sniper form out, both aiming for each other's head.

"We thought the same, and also went for the same method." - Y/n said.

"Yeah." - Captain nodded.

Sushang opened the door.

"Stop! You two!" - She shouted as she looked at the situation with a worried look. "You two don't have to fight!"

"Sushang, stay out of this!" - The Captain said.

"There's no stopping us now, only one steps away alive, and that one will either stop Ai-chan, or watch more and more people being Whale'd." - Y/n said.

"..." - Captain pulled out the Oath of Judah immediately as Y/n took a shot, it blocked the bullet.

The Key of Sanction broke upon the shot, and the Oath of Judah was damaged heavily by the shot. To the point he doesn't think it can activate its abilities again.

"I was thinking what would happen... When two Divine Keys users fight against each other?" - Y/n said as he pulled out the Xuanyang sword, two of them.

Captain turned the Judgment of Shamash into the Cleaver of Shamash.

Two of them went for a melee battle of the Divine Keys, the Captain can't release the power of Shamash without having the fire consume him, while Y/n don't know how to use the Divine Key he is holding, although he has more advantage because his opponent has a big, slow sword.

The Captain got some cut wounds, the same goes for Y/n's hands are shaken because of the impacts that Cleaver of Shamash made. 

"This is the end!" - Y/n said as he leaped forward to the Captain, cuts the Captain's head off in an instant.

That was all happened inside his mind, that has been made up by the Key of Sentience, which is used by the Captain at the very beginning.

"This way, I will easily-" - The Captain attempted to take the key from him, but he wakes up so suddenly, he lifts Captain up by holding his neck. 

"You forgot one thing..." - Y/n said as his hand showed the Captain the Fenghuang Down. 

He then takes out the Jizo Mitama, the Key of Corruption. "Time to end this." 

But when Y/n tries to kill the Captain, he realized the hand which he used to hold the Captain has been cut off, but he didn't feel pain from the wound. 

"This is... another illusion?" 

Y/n confused as the surrounding started to collapse, he tries to wake up from the illusions, but it's one after another.

"How is this possible?" 

Outside, the Captain is looking at Y/n who is under control.

He can't take the key, as it phases through the Captain's hand when he tries to get it, this is another ability of the Key. 

"This... Is this really... The only way?" - The Captain asked with hesistation in his words, as he can't offer to kill his friend. "I don't want to do this!"

"Aw I'm so glad that you don't want to." - Y/n voice behind him, as he is standing there with a smile.

"..."

"..."

"... Forget that."

"But-"

"FORGET THAT!" - The Captain pulls the Abyss Flower out and attacks Y/n, Y/n responded in time with the Oath of Judah. They continue to fight. 

Meanwhile none of them aware of the fact that Ly Sushang was the one who put both of them in illusions.

"...." 

Like 2 minutes later, she scolds them for fighting when the fate of the multiverse is in their hands.

"Alright, I'm gonna help you then." - Y/n said as he checked his keys.

"Good to know." - The Captain smiled after checked his keys.

"Alright let's go!" - Sushang said as she leads them to the station.

"Wait how are we supposed to go? Plus, we don't know where Ai-chan is." 

"... You two look for something to move. I will... Watch where did Ai-chan go." - Y/n said as he activates the Second Key, getting inside the bubble world and starts the observation. 

"Well, we better find some sort of transportation." - The Captain said as he looked around the station.

"Fu fu fu fu~" 

An awfully familiar voice appeared behind them, they looked around and sees a familiar face.

"Looks like we have two people in a hurry here... But the train has been destroyed. Need a ride? I can offer you a transportation at a very reasonable price~" - The trustworthy Dealer named Senti approached them.

"..."

"Like we have other choices, how much?" - The Captain asked, and reached for his wallet. 

"Welp 328700 crystals for 2 people + your soul and 2000 crystals for every minute you ride the thing." - Senti said.

"..."

"..."

"..."

"..."

"Hey I know where she is." - Y/n got out of the bubble world.

"For 3 people it will be-"

"WE DON'T HAVE MUCH TIME!!!!!!!!!!" 

And, uhh, the transportation was one of Senti's sword... The big one, that she used it as a hover, as well as the other 3 are standing right behind her in the line.

"Alright, hang on to something that you won't fall." - Senti said with a smile after getting threatened.

She then proceed to go with the Speed of Light across the Imaginary Tree. With almost everyone on the sword almost fell off except for Senti and Sushang. 

End of chapter 5.

You guys have no idea how high I am on crystallium.