Takumi Aiba (相羽 タクミ Aiba Takumi?) and Ami Aiba (相羽 アミ Aiba Ami?) are the male and female protagonists of Digimon Story: Cyber Sleuth and a supporting character in Digimon Story: Cyber Sleuth - Hacker's Memory. Before their default names were revealed, they were referred to as Protagonist (主人公 Shujinkou?) in news articles. For organizational purposes, they are referred to as Aiba in this Wiki. Their chat room nickname is AI◎BA. Takumi/Ami's first name can be changed to whatever the player wants but their surname will always remain Aiba.


Takumi is a teenage boy with fair skin, red spiky hair, and blue eyes. He wears a black shirt under a gray shirt with a yellow "" logo in the front with an yellow "AWA STUDIO WORKS" written under it, a yellow "X" in the back, and yellow lines near the hemlines, and single black glove with similar X and ◎ designs in the back and palm, respectively, and yellow circles in the fingertips in the right hand. He also wears yellow pants, black sneakers with yellow soles, two gray bags with yellow lines on his waist, with the straps forming an "X", and blueish gray goggles on his head.

Ami is a teenage girl with fair skin, gray eyes, short red hair, which is worn in a ponytail on the left side, tied by her blueish gray goggles, and a medium chest. She wears a yellow shirt with black raglan sleeves, yellow vertical lines going through the sleeves, which turn into horizontal lines after reaching near the hemline, a black ◎ logo in the chest, and the words "AWA STUDIO WORKS" written under it. She also wears a black glove in the right hand, with a yellow "X" in the back of it, a yellow ◎ design in the palm, and yellow circles in the fingertips, a very short black pleated skirt with yellow vertical lines on each side, yellow stockings with two black vertical lines in the outer sides, and black shoes with yellow soles and two yellow dots on top of them. She also carries a yellow backpack with black lines in the straps.

In Digimon Story: Cyber Sleuth - Hacker's Memory, the player can import their savefile from the original Cyber Sleuth game. If done, Aiba assumes the gender of the imported save file. If not, Aiba's appearance will default to Takumi.


Hacking skills

  • Stealth Hide: Makes their own avatar invisible.
  • Code Scan: Can read a locked file.
  • Copy and Paste: Copies a file from one place to another.


Takumi Aiba (相羽 タクミ)

Default name of the male protagonist. Mentioned in their shared profile page in the official site. Officially romanized in a PlayStation Vita custom theme.

  • Ja: Aiba (相羽?). Japanese surname that means "mutual feathers". The kanji "相" can also mean "one's destiny", and the meeting between Aiba and Kyoko has been advertised as a "fated meeting".[3] May also be a pun on "cyber" (サイバー saibā?).
  • Ja: Takumi (タクミ?). A Japanese gender-neutral name. Starts with "Ta" (?) like the names of most goggleheads, and ends with "mi" (?), like Ami. Possibly from "Takumi" (? lit. "skill"), as a reference to Connect Jump.
Ami Aiba (相羽 アミ)

Default name of the female protagonist. Mentioned in their shared profile page in the official site. Officially romanized in a PlayStation Vita custom theme.

  • Ja: Ami (アミ?). A Japanese feminine name. Starts with "A" (?), like Akira and Atsushi, and ends with "mi" (?), like Takumi. Possibly from "amība" (アミーバ? lit. "amoeba"), as a reference to Eaters.

Enjoy! Chat nickname.

  • Consists of both kanji of the surname being split by a "", and romanized in upper case.


Digimon Story: Cyber Sleuth

Aiba gets curious after hearing rumors of hackers in the streets. One day, they receive a Digimon capture device known as the "Digimon Capture" from someone they met in an online chat room, and travel to the lowest layer of Cyberspace to gauge the rumor. But because of a sudden malfunction in the system, part of their mental data is corrupted, resulting in their body becoming a half-digitized Data Body (データ体 dēta-tai?),[4] and is saved by Kyoko Kuremi.[5] Aiba then awakes with the special ability Connect Jump (コネクトジャンプ Konekuto Janpu?), which allows them to travel between the Real World and Cyberspace EDEN through terminals,[6] and becomes a detective apprentice at the Kuremi Detective Agency.[5]

Digimon Story: Cyber Sleuth - Hacker's Memory

Aiba walks past Keisuke Amasawa when Keisuke first arrives at the Nakano Braodway. Later, Aiba defeats Mephisto-san, whilst Keisuke and Ryuji Mishima are busy dealing with his minions, leading Keisuke and Ryuji to complain that another hacker had beaten Mephisto first. Aiba is shown fighting against other hackers and Eaters in Under Zero, as the same time as Keisuke, Ryuji and Chitose Imai do the same.

Digimon Story: Cyber Sleuth (manga)

The agency is hired by three young men, as their Cyberspace EDEN accounts had been stolen by hackers. Kyoko sends Takumi to Kowloon to track down the accounts but whilst there, Takumi comes across a security wall. He summons his Terriermon, Palmon, and Hagurumon, who destroy the security wall, through Takumi's Wall Crack skill, after which they are transported to the Demons' secret hideout. After coming across the stolen data, they are confronted by Demons members, and their Growlmon. They offer Takumi to join them in their attempts to take over both EDEN and the real world, though when turned down, summon a Cyclonemon and attempt to steal Takumi's account - however due to Takumi's half-digital body, they are unable to do so. Takumi then connect jumps into the base's computer, taking the stolen accounts back. After ending the connect jump, Aiba has Terriermon, Palmon, and Hagurumon digivolve to Gargomon, Togemon, and Guardromon. In response, the Demon members summon two more Growlmon, though all three are defeated by Aiba's Digimon. Cyclonemon then attempts to defeat the trio, but is defeated as well. The Demons members are then attacked by an Eater (Purebreed Mode), having their accounts destroyed and succumb to EDEN Syndrome, whilst Takumi escapes, and returns to the accounts to the clients.

Other forms

Half-digital body

The half-digital body (半電脳体 handen'nō-tai?) is the form Aiba takes after being attacked by an Eater in Kowloon. Some days after Aiba contracts the EDEN Syndrome, their mind is able to materialize itself in the Real World as a digital being. However, their form is broken, and Aiba must go to Kowloon retrieve their avatar parts.

Due to being made of data, Aiba has the Connect Jump (コネクトジャンプ Konekuto Janpu?) ability, which allows them to enter any digital device or being, as well as moving between two places that are conneced by a Digital Network. Due to the invasive nature of Connect Jump, Aiba's original EDEN account doesn't recognize them, requiring the creation of a new account.

When the dimensional door between the Real and Digital Worlds is opened, Aiba's half-digital body is affected, being enveloped in static for some seconds when they return to the Kuremi Detective Agency.

After Mother Eater's defeat, when Aiba and their friends are returning to the Human World, Aiba's half-digital body breaks when they try to grab Nokia's hand, and their mind is trapped between the two worlds until Alphamon reinstalls it on Aiba's body.


Salaryman b.jpg

When Aiba and Arata decide to invade the secret room, Aiba uses a salaryman avatar to enter Kamishiro Enterprise without being recognized.

Notes and references