Eiji Futami

Eiji Futami (双見英司) is the main antagonist of Digimon ReArise Season 2.

Description
Eiji is graduate student who majored in information science. He is a part-time worker who recently joined the Truffle Cafe. He has a gentle demeanor, and interacts with people and Digimon without distinction. He studied under Keito Tamada's father, and is acquainted with Keito and Nozomi Tamada and has known them for five years. He goes to the same college as Keito and they work together in the same lab. He met their Father at a conference and then the two befriended each other on social media and eventually became close enough friends that he introduced him to his kids though in recent times the two of them have been unable to hang out due to their Father working overseas and Eiji being busy with college/work.

Etymologies
Name used in Digimon ReArise.
 * Eiji Futami (双見英司)

Fiction
At some point Eiji created a virus and accidentally infected with it. Although this wasn't intentional, Eiji uses this to his advantage and forces Takumi Hiiragi and Dorumon to work for him and help him achieve his goals of breaking into the Kernel as he was the only one who knew how to cure the virus. He has them team up with Sara Shinkai and, who also work for him, and has the four of them do his bidding. Eiji's plan is to have them capture Spiral with his Sprial Capture Program, steal DigiCores from the (who had been given them by the ), and then trap a member of the  so that he can obtain their power, then use all of these together to get to the Kernel.

Eiji was hired as a part-time waiter at the Truffle Cafe when the was on vacation with  overseas, though had the day off when the Protagonist returned home and visited the Cafe, so they were unable to meet. Unbeknownst to the others, he did this so he could be close to the Tamers and manipulate them with no one else aware of his true intentions.

Some time later Eiji finally meets the Protagonist and when they visit the cafe with  and. Michi Shinjo and Mayu Kohinata are surprised that they have never met before. Eiji relays that he had heard all about Mon and Hackmon from and that as soon as he saw Mon, he knew it was her - much to the shock of Mon. The girls point out that she dresses strange and decide to take her shopping though they realise that since Mon has no smartphone they wont be able to hide Hackmon. Luckily for Mon, Eiji gives her an old smartphone as he had many spares.

When a strangely high amount of Digital Points open up Keito asks Eiji to help him looking into why so many had opened, though they are unable to figure out why.

When Nozomi draws a picture of Elecmon, Eiji is the only one able to figure out what her drawing was. Shortly after a Digital Point opens up outside Truffle and so, deciding to research the phenomenon (as part of their college's research is about Digimon), he joins the rest of the Tamers as they battle the Spiral and watches as they defeat them. The group come across a ToyAgumon, which attacks out of fear for its life, though Eiji talks  and  out of attacking it in retaliation, telling them that the ToyAgumon was just scared. Pumpkinmon and Nozomi are then able to convince the ToyAgumon that the group mean no harm and they all become friends with it. Keito then thanks Eiji for stopping them from attacking it.

By using Keito's app that allowed communication whilst in Digital Points as a basis – as well as the data he learned from studying the Spiral – Eiji is able to create a new app that allows similar communication between the Human World and the Digital World. When the Tamers try it out, they are suddenly attacked by a group of Spiral as they were attracted to the app. Herissmon senses the Spiral data inside the app and when questioned about it Eiji informs them of the fact he he had used Spiral information to make the app. Eiji apologises, not realising that this would be an issue, though the group forgive him as the positives of the app outweigh the negatives.

When, , , and – of the , , and  – are fighting due to the dispute between the Royal Knights and Three Archangels over if  is hiding in the Archangel's domain or not, Eiji comes up with a plan and tells Mon to point out that not all members had been involved in their prior discussion that caused the battle. This was successful and the groups agreed to a summit that would involve all members. He also comes up with a potential list of topics that would be brought up during the discussion so that the Tamers could practice how they could deal with each situation. He then attends the summit via video call.

With Eiji's plan almost complete he has Takumi exceute the plan to trap. Takumi has a large group of evil Digimon attack the Digital World, with them travelling there through a portal from the Dark Area. Seraphimon and the  defeat them and eventually find the portal, leading them to Takumi and Dorumon. As they fight against Takumi realises they can't win and has Gaiomon flee with Seraphimon pursuing them. As they run away, they try to trick Seraphimon into falling into their nearby trap, whilst Seraphimon charges up an attack that would kill everyone. As Takumi refuses to give up, still wanting to defeat the Archangel, Gaiomon surrenders – finally standing up to Takumi, refusing to be evil and blaming itself as it realised that Takumi would never do something evil unless it was to protect his partner. Gaiomon then ends its partnership with Takumi and dedigivolves to Dorumon. Seraphimon accepts the surrender, however Sandiramon does not and attacks the duo with the intent to kill them. The other Tamers arrive and join the battle to help Takumi and seeing that Takumi had failed, Eiji activates the Spiral Capture App on Takumi's phone, releasing a large group of Spiral which then attack everyone. Eiji had hacked the Spiral and given them new abilties, which they use to paralyse everyone. Eiji had known that Takumi would probably fail and whilst insulting him accidentally reveals that he was the one that infected Dorumon with the virus. Realising that Eiji had tricked him, as well as learning that the Spiral paralysing everyone included Dorumon, Takumi charges into the battle to try and protect his partner. Takumi finds Dorumon on the verge of death and admits he had done all the evil things to protect it and would still do it all over again, despite knowing that he was doing wrong as he just wanted to protect his partner. The two reconcile and come to understand each other, with Takumi deciding that he will stop working for Eiji and instead cure Dorumon's virus on his own. With their partnership renewed and the duo back on the side of good, Dorumon digivolves to, defeats the Spirals, saves everyone's lives, then uses its new powers to remove everyone's paralysis – ruining Eiji's plan. Though he was disappointed to lose Takumi, he didn't mind too much as he still had Sara and could still achieve his goals with or witout Takumi.