Tatsuya's Relationships/Story

Tatsuya finally finishes with the preparations and begins his new life in Japan, all by himself, away from his parents' crazy lifestyle. He would soon however recieve an egg that, after coming out of his screen, also brought a strange, black device. Searching for someone who knew what happened, Tatsuya met Charles Ashmore, who explained that it was a Digi-egg. Soon after that, it would hatch, giving Tatsuya a new, not so faithful companion: Dodomon. Charles then went berserk, digivolving into Steamdramon and fighting them atop a roof, but they were able to beat him after Dodomon digivolved into Dorimon. Charles apologized and left, and Dorimon decided to stay near Tatsuya so he could become stronger.

Tatsuya and Dodomon went for a walk, although the little Digimon was hidden inside the bag. When he heard the other humans, the Fresh wanted to battle against them, but the Tamer managed to go to a less crowded place and let him free for a while. Then he met Antonio and Henrique, a pair with a singular story. Soon after their Digimon began a little "tag" game, where they actually hit each other, the humans decided to go to a nearby restaurant for lunch.

-Tatsuya, Antonio, and their partners go and have a meal at an italian restaurant. However, a Starmon attacked the place, leaving Tatsuya and Antonio to defend it by themselves. As they killed him, he revealed that he was Antonio and Henrique's friend, the Xerif, who had been infected with the Nega infection. Tatsuya promised to help Antonio fight the mysterious disease... but first, he had to get stronger.

As Tatsuya and Dodomon are out for a night walk, they overhear a girl named Avery Joel playing music in a small cafe's scenario. Since his partner hadn't heard music before, they decided to drop by and hear it from closer, so the Digimon could get a good taste. Things turned out that she was also a Digimon Tamer, which drove Tatsuya and another boy, Ryouta, to approach her. After a friendly conversation between the three (or at least, an attempt of a conversation, since Ave and Ryouta didn't speak each other's languages), their partners ended up in a small mock fight. Dorimon, to whom Dodomon had evolved to have more freedom, was then struck by reality as Babydmon, Ryouta's partner, digivolved to the Rookie stage after being with his Tamer for just a day! Even though the fight had developed into a duel between Patch, AJ's partner, and Dracomon, the In-Training also attempted to fight them...(to continue)

-Preparing for an excursion to Mount Fuji, a mysterious feeling calls Dorimon in Central Shibuya's station. As Tatsuya follows his partner, his digivice activates in one of the elevators, which falls downwards and crashed with a violent impact, although it only knocked them out, with no other repercutions in the teen or the Digimon's health. Soon after that, the Dark Trailmon appeared, and Dorimon entered it, its doors shutting behind him and his Tamer, whose fast reflexes allowed him to get inside at the last split second. There, the train-like Digimon made Tatsuya face the decision of either keep going down a path that would lead him to destruction, or give him Dorimon and forget about Digimon, living a normal life. The teen's denial and desire to stay with his partner caused him to digivolve to its Rookie stage, Dorumon, and they escaped the train, but they were now in a cave with a rocky formation in the center. Facing the ghostly images of many high-leveled Digimon, Tatsuya didn't waver, and this caused the Digimental of Determination to activate. The Dark-Trailmon then pointed that he had surpassed the test. Finally, riding his newly evolved Sangloupmon, Tatsuya plunged into the Digital World with a new power.

Tatsuya and Dorumon found themselves without anything to do in Terminus City. It was then when they met a boy with another Dorumon, whose personality seemed the complete opposite of Tatsuya's partner. The other teen was called Yuuki, and they ended up having a friendly conversation, due to Tatsuya's extremely extrovert behaviour. As they mentioned their Digimental, the other Dorumon asked for a battle between both of them. Accepting so they could try out their new Digivolution's strengths.

After meeting Yuuki and his partner, they both engage in a friendly battle in the Network Plains. It seems that Canisdramon, his armored form, and Sangloupmon, Tatsuya's Digimon, are even in almost everything, except the former being faster, but the latter being stronger (in raw power terms). In the end, only after a fierce battle, Sangloupmon was the last one standing, and that gave him victory. Still, Tatsuya and Yuuki exchanged numbers, becoming friends and sparking a rivalry feeling between the two.

A few days after fighting Yuuki, the teen met with Ryouta again, the one he had met when his Dorimon couldn't go beyond Rookie. He had been beaten by a group of bullies, which prompted Tatsuya to start training him in martial arts. They also met UFADO, a strange Digimon, Mana, a cheerful girl who had a crush on Ryouta, and her partner, Ayaka, who managed to get Dorumon on his nerves. Then they had to face a dark Ryouta, who challenged them the day after in the Digital World. Tatsuya decided to help his friend, and stayed over at his home to prepare for the battle.