Author's note: My ideas just came about as I write this. It's weird but it should work out somehow.
Digimon is not mine.
Side: Osamu (Part 2)
Osamu blinked and found himself surrounded in darkness. He lying against the wall and his arms were all tied up to his back.
"Are you alright?" A boy with huge brown hair in high school uniform asked him with a weak tone. He was tied up in another corner looking wary and weak.
"You're Taichi?" Osamu recognised him. The boy nodded in acknowledgement before doubling up in pain.
"TAICHI!" Osamu wanted to reach out for him. He was definitely having an attack. Osamu remembered how he was captured and the culprits had been waiting for Taichi.
"Well, well, both of you sure taken a long time." A voice echoed loudly to where they were. Dark Gennai emerged from the dark with an eerie smirk. He walked over to Taichi and kick him to the ground. Taichi gasped in response struggling to catch his breath.
"Don't worry, he won't die just yet." He turned to Osamu. "I thought you hate him enough that you wanted him dead." Dark Gennai frowned at Osamu who gritted his teeth.
"Yggdrasil-sama is very happy with your performance." Dark Gennai remarked while stepping on Taichi's back. He was amused by Taichi's struggle against his abuse as he poured cold water over his hair.
"To achieve your objective, you're willing to resort to any mean including murder." Osamu's eyes widened in fear. Obviously, he knew his secret.
"Of course, nothing escapes Yggdrasil-sama's eyes. This boy and Menoa Belucci were victims of your wrath." Dark Gennai pinned Taichi down with one of his knees.
"How did you know?" Osamu finally got his words out. Taichi blinked weakly struggling to break free from Dark Gennai while listening in to their conversation. He had found himself a debris that looked sharp.
"Life is never fair is what you are thinking. Why is it that you must die young? Is that fate? Is that destiny? Why are the others safe from their fate?" Dark Gennai made various expression while fooling around with Taichi. Taichi was pissed enough to do a head butt on him. Dark Gennai tripped and fell on his butt. Taichi had broken free of his restrain and ran over to Osamu to try to cut his rope.
"You!" Dark Gennai wanted to play some more to only be stopped by another figure in the dark. Osamu realized it must be Yggdrasil.
"Long time no see, Ichijouji Osamu. Did you enjoy the time extension so far?" A robotic-like being appeared to them.
Osamu found himself not being able to breathe. The being that helped him was not Milleniumon? He stood up after Taichi had freed him. He could not believe he was having an attack when he looked a lot better now.
"No, it's not the Digimon Tactician, my dear. It had always been me, Yggdrasil." The being known as Yggdrasil finally showed up. Taichi stared hard at the being. They had all heard of the name but had never met him in person.
"What are you planning to do with us?" Taichi struggled to say. Seemed that he had regained some strength with the drug effect wearing off.
"Let us get started with the final plan. The two of you had been integral to our plan as you had shown us the fate can be defied." The two boys glanced at each other before turning back to them.
"They will be perfect vessels for our plan." Osamu recalled hearing the voice said. It was Yggdrasil.
"No, we're not going to let you have your way!" The two boys said in unison. Even not understanding their situation, they were aware of the consequences if Yggdrasil managed to proceed with whatever he was planning. Both boys pulled out their digivices. They would fight their ways out their dreadful destiny as always.
Lights shot out from their Digivices engulfing them.
Year 2018
The next time Osamu woke up, he found himself back in the Real World. He dozed off in an office. He removed the VR headset which he worn over his head. He was in the government building in Tokyo and he could see most of the skyscraper and buildings. The phone on his desk rang and that startled him.
"Hello." He answered cautiously.
"Ambassador, Izumi Koushirou is here to see you." Osamu heard the party over the line said. That was really confusing.
Osamu cautiously peered at the lockscreen of his laptop. His eyes widened at the year stated on screen. It was 2018. So now he had grown up without realizing and he had become an ambassador?
"Send him in." Osamu replied. That was not his voice. Osamu panicked. He turned himself around and saw his reflection on the glass window which overlooked the city. His hair was cut shorter than he would like and he looked really different. His eyes were bigger and rounder, he was honest looking and he looked like someone really familiar. How on earth did he change his look so much?
Osamu's line of thought was cut off when he heard the knock on the door.
"Come in." Maybe he could ask Koushirou about it. A man with red hair stepped in. He reeked an air of confidence as he approached him. Osamu saw a gift card he placed on the desk. The name stated was…
"Yagami Taichi." Osamu looked stunned and he stared up at the man before him.
"It's my wedding next month. Will you be my best man, Taichi-san?" Osamu was horrified by the sound of it. Why would he see him as Taichi? They were not the same person at all.
"Give me a mirror."
"What?"
"You can use the selfie function of the phone. It doubles up as a mirror." Koushirou suggested and Osamu was puzzled but he picked up fast. The smart phone in 2018 seemed much more advanced than eight years ago, he could unlock using facial recognition. The camera function could already take photos on par with a digital single-lens reflex camera. Osamu finally taken a good look of the man on screen. His face was drained of colour. That was not him. He was Yagami Taichi.
"Are you okay? You don't look good? Have you taken your medicine?" Koushirou asked. His line of sight fell on the headset on his desk. Taichi had been testing out his invention and he must have been overwhelmed by his experience in there.
"Koushirou, did you know a person named Ichijouji Osamu?" His head shot up to face Koushirou who sat himself opposite him.
"Ichijouji? That's the elder brother of Ichijouji-kun. Why did you ask about him suddenly?." Koushirou wondered.
"Where is he?" Osamu asked carefully.
"Taichi-san, you're being funny. Ichijouji Osamu died in an accident when he was 11. You will visit his grave yearly on his death anniversary, don't you remember?"
"I visited his grave every year?" Osamu repeated Koushirou's words.
"Yes, Taichi-san, you yourself said he gave you his heart and saved your life. " Osamu slammed his palm on the table startling him.
"What?" Osamu was aware he was a compatible donor but it was unbelievable to hear of himself dead and he saved Yagami Taichi?
"Koushirou, do you mind leaving me alone for a while. I need some time to myself." Osamu barely able to get his words out.
"Ok. Taichi-san. My wedding next month." Koushirou wanted to remind him once more but gave up seeing his friend in that stoic state. "See a doctor if you don't feel well." Koushirou reminded him expressing concern about his health as a heart transplant recipient. Osamu nodded and waved forcing a smile to comfort his friend. Koushirou left noting his friend's positive response.
Osamu went to the gents and saw the scar on his chest. He was sure now. He felt very sick to the core. Why was he in Taichi's body anyway?
"Donor of what?" Osamu did not like what he hear. Once he was pronounced brain dead, his heart would be donated to Taichi and Taichi would be given a new lease of life.
"It's either he lives, or you live. If you die and he lives, he will take everything from you including your partner Digimon. He isn't as cold-hearted as you. Unlike you, he is loved by everybody around you."
Osamu raised his hand and saw a crest he wore around his wrist. That was not the Crest of Darkness. It was a crest with an emblem which resemble... Miracle? He realized the smart phone he had was a copy of Taichi's digivice.
Osamu heard from Koushirou on the current outlook on the society's reaction with the Digimon. The situation certainly improved with Taichi mediating as the ambassador. Osamu snorted at the thought that Taichi was well-liked by everybody. He is kind, earnest, sincere, courageous and resourceful. The boy tends to put others before himself. They can count on him in times of need. That's what the others like about him. This job really fit Taichi really well.
Koushirou was researching on dimension travelling, a function Taichi's Digivice possessed and different ways to do dimension travel. Osamu jumped on the opportunity to use the function to travel back in time and dimension in search for a way home. Koushirou would not advise travelling in person as much as he wanted to do so in case he could not make it back safely. Hence he came up with another way and Osamu appeared in another time as hologram, reluctantly.
As time went by, Osamu realized, he was already dead in the dimensions he had visited. He died at the age of 11 and he was never able to arrive at the point in time to prevent his death. Observing Taichi and his friends in year 2002 really pissed him off. He was extremely jealous of Taichi. If he could never live past 11, he could not allow Taichi to do so.
Osamu worked with the Digimon Tactician, a time travelling Digimon, Milleniumon he encountered during his travel and even manipulated various enemy Digimon spreading words even if he could not be in that dimension that they would be killed by the Chosen Children on a certain date and they needed to at least get rid of one Chosen Child. He should not be allowed to live. If he could not escape his fate, Taichi should not too.
Using the research data from Koushirou to convert consciousness into data, he ever manipulated man's consciousness to his will to snipe Taichi in the forest area in Mt Fuji, shooting him when he was just an innocent by-passer caught in the line of fire between robbers and the police. Demon would some time appear to finish him off to ensure his victory, or killing him like the way he did in his original dimension. It was only Piemon's who needed some convincing to kill Taichi in order to prevent his possible defeat. Piemon was too cocky for his own good.
In any case, Ichijouji Osamu would have died way before he could donate his heart to Yagami Taichi. In all dimensions, Taichi would die due to heart injuries because he really resented the idea of Taichi receiving his heart to live on.
It was until in one of the dimensions, the Chosen Child from Tottori, Mochizuki Meiko confronted him about this. Osamu noted that Taichi had created the Incorporated Administrative Agency in many of the dimensions he been to. There was a dimension which seemed especially unique. The group of Chosen Children before his team were able to keep the memories of their adventure intact. That piqued Osamu's curiosity.
Osamu had studied the research from the dimension created by them. With the weapons created, it should lessen the burden of the rest of the Chosen Children so that they would not be forced to separate from their partners so soon. The more fight they put up with more evolution, the shorter the time they would have left. That was why Taichi created the Agency in other dimensions. Osamu disagreed. Since the Chosen Children would be separating with their partners anyway, might as well separate them and take their memories. As long as they did not remember, there would be less pain.
Mochizuki Meiko was special. She realized something was wrong with the dimension with her unique abilities to remember events from different dimensions even if it did not happen to theirs. That was why he decided to test her. They were in the dimension where Yagami Taichi managed to live past the adult age because he could not locate Taichi in 2002 when he should be reconfigured and returned to the Real World. He only reappeared in 2005 under Menoa Belucci's guardianship, only make known to him when she registered him as an agent in the Agency as Kamiya Taichi. By then Taichi was already an adult much to his annoyance.
With so many unknown in place, Osamu decided to remain in this dimension to play with them. He was aware what the brain of the team, Izumi Koushirou was capable of, he felt he should remove him from the game beforehand. The incident happened to Menoa Belucci gave him a hand. Koushirou was arrested and accident happened killing him in process.
Some force unknown to him used Menoa Belucci to kill Taichi even without him lifting his fingers for some reason. That caught his attention. He was also investigating this while setting up the world on fire since the society is biased against Digimon like his original.
His current partner Digimon, Heliosmon Menoa had created using Taichi's memory data, whom he had under his control too claimed that Taichi did not belong in this dimension. His instinct led him to Taichi in the hospital. This Digimon though, did not notice he did not belong in the current dimension with his holographic status.
BlackWarGreymon from another dimension had to be involved in this since he appeared from a rogue dimension gate. Heliosmon killed him for the same reason. He could not deal with Taichi due to interference from the messenger of Homeostasis. It did not take long for him to find out that Homeostasis wanted Taichi to be removed because his existence upset the harmony.
That led to the confrontation between him and the remaining Chosen Children in Koushirou's office. He had the final weapon ready. He intended try and unleash here to see if the Chosen Children here would be free of their obligation. Take their memories and their Digimon other than those did not belong due to the messed up dimension. When Osamu arrived at Koushirou's office, Osamu overheard Taichi's words.
Year 2010
"What Mochizuki said earlier was exactly what happened to me. At least one of them I can vividly remembered." Taichi looked in shame before turning to Yamato's direction. Yamato had already noticed. Taichi of this dimension had sacrificed himself in order to save the children whose consciousness was taken by Eosmon.
"I'm not your Taichi." Taichi decided to admit.
He was living in another Taichi's body. Seems that they were in similar situation, trapped and lost. One difference was he was still supported by everyone. Taichi's goggles he had been wearing back in his time was still given to Daisuke.
"Live. And give it back to me when you feel like it, Taichi-san." Daisuke squatted before him taking his goggles and put it on for Taichi.
"Yes, it fits you perfectly, Taichi-san." Daisuke commented proudly as Yamato and the rest smiled. Taichi conceded and smiled along with them.
Taichi's eyes was focused on him when he appeared before them despite being taken by Yamada as hostage. Taichi could not believe his eyes. While others saw him as the man in brown hair, he saw him as someone familiar. Osamu smirked. Finally he encountered Taichi who would know him in person.
"Are you Ken-kun's brother, Osamu?" Taichi asked before he gasped in pain with widened eyes. His heart ailment was acting up again. Osamu's line of sight fell on the crest on his own wrist. He got a feeling that this Taichi could be the answer he was looking for.
"Heliosmon, go get Taichi." Osamu said quietly.
It was not hard for Heliosmon with his instinct to overpower Yamada Kyoutarou and taken Taichi from him before all of them even realised. Yamada came back to his senses when he noticed Heliosmon opened a portal and left with Taichi. He dropped his pistol he was planning to kill Taichi with in horror. The rest of the Chosen Children especially Yamato was especially pissed by his helplessness. He looked as though he was going to kill him.
Taichi indeed, led him to the time dungeon Yagami Taichi, the owner of Osamu's current body was imprisoned.
Taichi-san!" Izumi Koushirou shouted recognizing the unconscious young man he had kicked over to imprison them.
Taichi sweating with cold sweat and he was clutching his chest in pain. Wallace removed his own jacket and Koushirou helped to rest Taichi's head on Wallace folded jacket. Koushirou was well aware Taichi's heart ailment was acting up and they needed to help him.
"That's too easy." Osamu laughed at the stupidity of the Chosen Children.
"That's enough! You should have the life you had desired since you have the Crest of Miracles, Chief? Or should I address you as Yagami Taichi?" The thought-to-be-dead Nishijima Daigo demanded to know why.
"Izumi Koushirou in my dimension is indeed amazing. There is nothing he can't do. Even a hologram can look so real as I can't be here in this dimension in person. The Crest of Miracles is in my control. Did you think you have any chance to defy destiny?" The male flicked his finger and Heliosmon absorbed Taichi who was bounded on the clock into his body and evolved while the rest watched in horror.
"As for me, like Homeostasis preferred the Child of Light as vessel, I'm looking for a body to use and it happened that this boy is perfect as my vessel." The man in suit remarked clenching and releasing his fist as if he was trying out this body.
"Don't tell me." Daigo muttered in desperation.
The man sizzled and changed his form. It was not Heliosmon he used as a decoy obviously. A male resembling Digimon Kaiser with a cape appeared before them.
"Yagami Taichi was just a façade, This is my real identity…" Ryo recognized the young boy whose photo in Ken's apartment he had etched in his mind. He was now all grown up.
"Ichijouji Osamu?"
"No, he is not Osamu. He is not Taichi either." The two boys found themselves laughing watching Ryo and "Taichi"'s confrontation. Yggdrasil had managed to obtain a vessel he had always wanted because one of them managed to move on and become an adult. They were trapped in Heliomon's body now because Yggdrasil succeeded. Osamu's data had returned to Heliosmon. Taichi just greeted him to welcome Osamu back.
"I had been doing Yggdrasil's bidding." Osamu admitted bitterly without even knowing. He stared at his hands recalling all the nasty things he had done to Taichi in his dimension as well as many others by separating them and their partners with Heliosmon. They lost their fight against Yggdrasil when they were captured in the lab. Osamu's data escaped to the future while Taichi's data was transferred to the Time Dungeon. It was ingrained to them, they have to destroy themselves to save themselves.
"He wanted to see which of us had higher endurance." Taichi placed his hands on the back of his own head.
"You killed me in order to live, while I need you to die to live on." Taichi said the cruel fact out loud.
"Now he is using my body to have fun." Taichi complained.
"Your body possessed my heart." Osamu pointed out. "Yggdrasil would not have his way if we both die."
"So you go all out to eliminate me in many dimensions." Taichi reflected seeing Osamu watching before he died. He did not realised it at all. It was only clear to him now Osamu was the key behind his death or rather the curse, at the same time, he was also the key for him to escape his dreadful fate.
"I died earlier. He will use you anyway if you survived." Osamu commented.
"Don't you resent me?" Taichi asked the boy who was in the same predicament as him.
"Yes, I do." Osamu admitted. "I'm jealous and I envied you."
"Well, we're both dead after this." Taichi hated to say.
"Is there no way we can get out of this?" Osamu hated to lose as always. He did all the bad things because he hated to lose.
"Me too." Taichi admitted to himself. They had been fighting against each other with contradicting objective. How ironic was this?
A screen appeared before them showing them images from the Real World. It appeared that the dimension gate had been opened. Daisuke was going all out. He was requesting reinforcement from another dimension. He had been making full use of the ability of his D-3 all these while to move forward with his dreams.
A Digimon engulfed in the light emerged before the Chosen Children. Both of them recognized the Digimon.
"Omegamon!" The sight of Omegamon mesmerized them.
"This should help to close the missing gap." Omegamon said as he knelt with a knee to keep the gate open with all his strength for Daisuke and the rest to enter.
"Daisuke is enabling the Chosen Children who should have witnessed the battle against Diaboromon to meet Omegamon." Taichi realized how smart Daisuke Agumon and Gabumon no longer exist in that dimension, hence, it was possible to summon Omegamon from another dimension. Osamu saw Wormmon and Hawkmon clutching their heads a distance away.
"Let us create some hope since we have a wild card." Taichi suggested. Their line of sight fell on Taichi who was encased with Koushirou and his friends. They knew what they had to do. Osamu surprisingly felt at peace even though they were both scared.
"Let's do this." The children of the Crest of Courage finally agreed with each other.
Heliomon on the surface roared in pain as both Taichi and Osamu held on to some hope in gaining control of this Digimon by merging their consciousness with him.
"What?" Osamu in Taichi's body noticed the change with the Digimon in the Time Dungeon. They were recalling their experience with their partners.
"Koushirou-san and the rest!" Hawkmon recognized Koushirou and Wallace who waved at them with a cheeky smile.
"This will not do!" Osamu raised his Digivice to activate the restraining technology to restrain the Digimon. The same shell which trapped Koushirou and his friends emerged and engulfed Wormmon and Hawkmon's group.
"No, you won't." Heliosmon launched an attack against Osamu who emerged unscratched because he was a hologram.
Heliosmon was now in full control by Taichi and Osamu who decided to work together to take down Yggdrasil in Heliomon's body.
"Oh uh.." Akiyama Ryo was surprised to see the so-called partner of Osamu or Taichi turning against him. Heliosmon charged towards the hologram.
"You should not even exist here." Heliosmon roared with his claw slashing at Osamu and created a distraction to break the captured Chosen Children free. An explosion occurred Monodramon, Terriermon, Lopmon and Tentomon evolved as soon as he found the crack and rescued the human partners.
"Can you not kill me again?" Taichi asked Osamu softly. Osamu rolled his eyes. They finally had the Chief of the Administrative Agency cornered.
"He is a hologram!" Osamu could not help but to say.
"But Koushirou and the rest will be in trouble if Yggdrasil escaped to the Real World." Taichi spelled out the possibility.
"He is in the Real World, your dimension eight years later." Osamu updated Taichi the fact reminding him they were dealing with hologram.
"That's you. Not Yggdrasil. I had been watching Yggdrasil here. He had been waiting for you." Taichi informed Osamu with a serious tone. Osamu's data was sent to the future while he was imprisoned here. Yggdrasil was unable to do dimension travel unless Osamu brought the adult Taichi's body to the time dungeon which he did unknowingly to find answers which he did. Yggdrasil had managed to merge his data with 2018's Taichi.
"Looks like we're in serious trouble." Osamu bit his lip as he landed Heliomon's attack against Osamu's hologram who smirked.
"Digimon should not even get involved with human in the first place. With Motomiya Daisuke's help, I can send more to other dimensions only he had access to." Osamu's hologram said. With a flick of fingers, an army of Eosmon appeared.
"More hologram?" Wallace said almost yelling. Their image was sizzling. Galgomon attempted to attack Eosmon who charged towards him and sustained some damage. They could damage them but they could not scratch them.
"Or not." Koushirou completed his sentence.
"Evolve straight to ultimate." Koushirou decided to take a gamble. The more they fight, the earlier they would be forced to separate with their partners. His time was not yet up, so he would keep fighting. Koushirou mocked that he was researching on the technology Osamu's hologram was using which was created by himself, his future self.
Wallace and Ryo nodded. They shouted for their partners and evolved their partners to their highest form. Daigo held on to the Crest of Courage and unconscious Taichi. He wished to fight too.
"We need to stop Yggdrasil from going to 2018." Osamu in Heliosmon suddenly blurted out while turning to Ryo who was now Justimon who defended him by taking down a Eosmon locked on to him. Surprisingly, it was not an army of Heliosmon. Ryo seemed to be know more things than he seemed as he was unfazed by the turn of events.
"And don't forget about us!" Daisuke and XV-mon appeared along with the active Chosen Children except Yamato, Sora, Miyako and Ken who remained behind seeing how they were of no help without their partner Digimon. Omegamon from another dimension Daisuke managed to get help from was defending the dimension gate they came in from the Real World.
"Yggdrasil." Like Daisuke, Takeru, Hikari, Iori, Jou, Mimi and their partner Digimon who arrived finally learnt of their enemy whom they had heard of yet had been out of sight for all these years. Osamu smirked and his image sizzled into its original form. Should he managed to open the gate to the dimension where the Crest of Miracles had chosen, he would win.
Taichi and Osamu often have memory gap and couldn't remember their objectives living in another body in another dimension.
Inside Heliosmon, Taichi and Osamu in data form are like a co-pilot in a machine like plane or like a mobile suit? That's the idea. That 'machine' is made up of data of another Taichi which made it easier for Taichi to gain control of his mind while Osamu could control its mobile movement.
The timeline Daisuke had access to were dimensions where Taichi was the one with the dimension key and vice versa.