"Here is where the portal is." Jeri said, leading the group to a small hut in the park, where she, Henry, Terriermon, Takato, Guilmon, Rika, Renamon, Kazu, Suzie, Lopmon, Kenta, Guardromon, MarineAngemon, Impmon and BlackRenamon gathered around to look inside.

"This is my favourite hideout. Terriermon, Lopmon and I played here all the time." Calumon said happily.

"Yeah but we failed to see a portal in there." Terriermon replied.

Curious, Kazu asked. "So this will lead us to the Digital World?"

"You bet. I can even show you the way. Follow me." Calumon said, remaining as cheerful as ever, as he went into the hideout.

The Tamers and Digimon all went in one by one, in which they all saw a multi-coloured portal at the end of the building's wall.

"Here it is." Calumon said, before explaining. "Enter here and we'll be in the Digital World together."

"Incredible." Rika said, amazed. "It look so beautiful."

"Come on everyone. Follow me!" Calumon cheered as he leaps in.

"Hey, Calumon!" Impmon called after him, before leaping after him, followed by BlackRenamon.

"Let's go everyone." Henry called to everyone as he let Jeri go in first, then Terriermon and then he entered.

Suzie and Lopmon entered afterwards, then everyone else until Takato, Guilmon, Renamon and Rika were left.

Just as Rika and Renamon were about to enter the portal…

"Rika." She turned to Takato. "You have to promise everyone not to tell them who we're up against, because I believe we can trust you both."

"Of course Master." Rika replied in a loyal tone as she smiled warmly, happy to know Takato was open enough to her to trust her.

Takato and Guilmon have darkened expressions on their faces.

"The opponents you are about to face…" Takato gulped and then said. "is my twin brother."

Rika and Renamon were shocked to hear that.

The enemy is Takato's twin?

"And his digimon is my twin as well." Guilmon added.

"Your… twin?" Renamon gasped.

"My brother's name is Satoru and his Digimon is BlackGuilmon. They're the reasons we've become fighters in the first place." Takato explained in reply, leaving Rika and Renamon stunned, from such a dark secret and seeing Takato and Guilmon's faces twisted with pain and anger, something Renamon noticed too.

But concerned for her Master, Rika asked. "What happened?"

"We'll tell you more once we entered the portal. Let's go" Takato just told Rika, making her nod in understanding.

And with that they entered the portal it was a long fall but at least, they all arrived in the green forests of the Digital World.

"Ah, you four made it." Jeri said waiting for the four to arrive.

"Some friendly Digimon welcomed us and they are giving us a place to stay for the night. It's just beyond these woods." She then told them, making Guilmon reply. "Thanks, Jeri. We'll be there."

As Jeri left, Renamon turned back to her Master and secret lover, before having to ask, wanting to know more about Guilmon in the hopes she could find a way to make him feel better. "Master, what happened between you two, Satoru and BlackGuilmon?"

Takato looked up in the sky, letting out a sigh as he spoke. "I was ten years old, and before I met Guilmon, me, my parents and Satoru were supposed to be a happy family but then one day, Satoru changed."

-Flashback-

A young Takato watched horrified as he could only watch as his family's bakery was on fire, burning to the ground, while his parents had been killed in the blaze.

Takato then then he saw someone emerge from the flames, who looked exactly like him, but his skin was pale and this Takato had black hair and a dark look in his eyes..

"Satoru set my home on fire and had BlackGuilmon kill my mother and father" Takato said, remembering how Satoru wasn't alone, in which a Black version of Guilmon emerged from the building with the same dark look Satoru had.

"Satoru, why? Why did you do it? Why did you kill mother and father? Answer me, brother!" Takato cried out.

"I am done... with everything." Satoru said, showing Takato his red eyes. "I want power. I want to rule everything."

"And I am aiding him in his quest." BlackGuilmon said.

"Rule everything? What do you mean?" Takato yelled.

"There is a world beyond this one. The Digital World. I will find a way to gain more power and then I will find a way to merge both the Real and the Digital World together. I will rule them all." Satoru replied in a wicked tone.

"You're crazy! You gotta stop this, please brother!" Takato cried out, begging his brother to stop.

"I think it's better that you followed your parents and died now. Pyro Grenade!" BlackGuilmon called out as he shot a fireball at Takato.

In fear, Takato shielded himself for the impact but…

"Pyro Sphere!"

A fireball suddenly shot past Takato and hit BlackGuilmon's, cancelling out the attack, before a younger Guilmon stood before Takato and looked at the dark duo.

"I was watching them the whole time. I too couldn't believe on what BlackGuilmon had done" Guilmon told Rika and Renamon. "So, I don't know Takato at first but when I saw him in danger, I had to step in."

"My own twin brother" BlackGuilmon said, recognising him.

"Why? Why are you're doing this, BlackGuilmon?" Guilmon demanded.

"I have a better idea. We'll leave you two for now but we'll be back to take your lives. I can promise you that. Farewell, Takato." Satoru said as he and BlackGuilmon disappeared into the flames.

Takato and Guilmon just stared in the flames and then their saddened expressions turned to anger.

-End Flashback-

"Afterwards we went into intense training to become stronger so one day we would face Satoru and BlackGuilmon and make them pay for what they did" Takato said, ending the tale.

Both Rika and Renamon were saddened by what they heard.

They never thought they would have to face Takato and Guilmon's own brothers, let alone the emotions the boys must be feeling at that time.

"But if he's so powerful, why must you fight them alone?" Rika asked.

"They're our responsibilities." Takato replied.

"They are our brothers so we have to stop them. If we get others involved, they will be killed. We won't allow this to go on anymore" Guilmon added.

Hearing this, Renamon took a shot in the dark and asked. "So Impmon and my sister knows too?"

"BlackGuilmon promised BlackRenamon power but just wanted to use her, so he betrayed her. I helped her escape but I bet BlackGuilmon knew I've become stronger and I know he'll become more powerful." Guilmon replied.

"I don't know what they're trying to achieve by merging the worlds, but one thing's certain." Takato said, before he and Guilmon then told Rika and Renamon. "We have to stop them no matter what."

Rika and Renamon felt saddened by this. They wanted to do everything to cheer them up, anything but…

"It's getting late. We should rejoin the others." Takato said calmly as he noticed the sunset, followed by the night sky.

The other three agreed and followed the trail Jeri left by to a spa hotel to relax and prepare their next move against the eventual darkness.