It may also be that Gennai has been messing with the system's code again following the same logic he described during 02, where alterations affected how Digimon related information persisted in human memory and perception. If that pattern is still active here, it would also help explain why most people seem to forget or partially remember what happened despite the scale of these events.

<<< 02 FLASHBACK >>>

<<< END OF 02 FLASHBACK >>>

Libra is an anomaly within the code sealed within Meicoomon from her origin. It functions as a preserved dataset from the Digital World prior to its reboot, including records from destructive entities such as Apocalymon.

This data was encrypted inside her without awareness or capacity to contain it. Meicoomon wasn't designed to carry such a burden, and her inherent instability made her unable to process it without distortion, causing her condition to collapse into irregular behavior. The virus also spread to other Digimon that came into contact or close proximity with her spreading like an epidemic as she kept escaping from Meiko.

Libra is a consequence of a system that embedded all data from the Digital World within a host that couldn't sustain it.

Meiko is Meicoomon's partner and struggles to understand her role, since she was never given guidance or the kind of journey the original chosen children went through in the Digital World years earlier. She tries to help her partner, even when she begins to associate herself with the instability around her.

Yggdrasil in Tri is a controlling intelligence of the Digital World that manifests through avatars such as Dark Gennai and the tri-Digimon Kaiser rather than direct presence. Through them, it pushes actions like the escalation of global instability, creating conditions that lead toward the Digital World reboot carried out by Homeostasis. It also exploits Maki Himekawa's grief over the loss of Bakumon by leading her to manage "Project R" and presenting the reboot as a way to make that reunion possible. This reboot restarts the Digital World and returns Digimon to their base state, restoring those who had been lost while erasing memory data and the bonds they formed with their human partners, allowing Digimon to exist freely and ultimately enabling the expansion of control over multiple worlds, including the Human World and other connected dimensions. This logic ties back to its origin as Yggdrasil, the world tree that connects multiple realms, reinterpreted in Tri as a central structure meant to maintain order across connected dimensions.

However, its operation falls under the regulatory framework of Homeostasis, so when Yggdrasil pushes its logic too far and breaks the conditions required for equilibrium, it can be shut down as implied at the end of Tri when Homeostasis orders its disconnection.

If you want to know more about Yggdrasil, it's worth reading So Who the Hell is Yggdrasil Anyway: A breakdown, which covers its different roles across the franchise and provides broader context beyond Tri.

Alphamon appears as an independent entity when something exceeds what the Digital World can handle, resolving the situation by removing what can't be contained, and it doesn't respond to motives or alliances, as its way of operating simply aligns with outcomes that restore a stable state, which may benefit certain parties.

Headcanon: the fall of the 02 team at the hands of Alphamon was probably collateral damage, in the context that they would've tried to intervene in the Digimon infection crisis and the situation would've escalated so much that they ended up within the area of instability that Alphamon removes without distinction to restore balance, like when Taichi falls into the abyss after the crack that opens during the fight between Alphamon, Jesmon, Omegamon and Meicoomon.

Jesmon / Huckmon acts as a messenger of Homeostasis, responding to signs of instability across the Digital World, especially in cases like Meicoomon. It doesn't act as hope or salvation but as a controlled measure against collapse.

Homeostasis in Tri operates as a balancing mechanism within the Digital World, restoring order when instability reaches a critical point. Its actions aren't guided by moral judgment but by the need to reestablish equilibrium, and it manifests through vessels such as Hikari, as well as intermediaries like Gennai and Jesmon.

In Digimon Adventure, following the Greymon and Parrotmon incident in 1995, Homeostasis scanned the chosen children and identified within them key traits that became the Crests, forming a framework for bonds between humans and Digimon, intended to enable evolution toward the Perfect level through those traits and maintain stability across both worlds.

In Tri, Homeostasis attempts to contain the Libra in Meicoomon by assigning Meiko as a chosen child. Although partial stability is achieved, the situation eventually escalates beyond control, leading Homeostasis to initiate a full system reboot.

The reboot was an emergency measure after the infection destabilized the system to a critical level, forcing Homeostasis to execute a full reset as a last resort to restore balance.

This process resulted in the loss of Digimon memories since identity data wasn't preserved during the reboot, a condition Homeostasis considered necessary to stabilize Libra.

The decision wasn't driven by malice but by structural limitation, as Homeostasis operates through systemic parameters where bonds are treated as variables within stability equations rather than factors defined by affect or moral value.

The reboot didn't resolve the Libra anomaly in Meicoomon because it wasn't a surface level corruption but a structural irregularity embedded within her data profile. System reboots can restore global stability, but they can't remove anomalies that are intrinsic to a host's core configuration.

But even without memory, the bonds reappear because the humans remain the same as before the reboot and the Digimon retain the same data they once resonated with. So when Taichi and Agumon meet again, they don't build something new from nothing but return to a pattern already established through their original bond, even if Agumon can't consciously remember it.

One of the most common criticisms of Tri is the absence of the 02 team. From the start, it's clear that this absence is a deliberate narrative choice rather than something omitted or forgotten.

The offscreen defeat of Daisuke, Ken, Miyako and Iori by Alphamon reinforces this shift in focus. While it may feel like the story should develop 12 chosen children alongside their Digimon and an already expanded new cast, including Meiko, Maki Himekawa, Daigo Nishijima, Homeostasis, Yggdrasil, Jesmon, Alphamon… I don't think it's realistic to expect that, especially in an OVA format. The story tried to stay centered on the original group and their current state of dispersion, identity and doubt.

This kind of focus isn't unfamiliar within the franchise. Previous entries such as Hurricane Touchdown and then 02 The Beginning also operate without the full original cast and function as complete stories without requiring everyone to be present.

Although I can understand that their absence feels abrupt with Alphamon defeating them early on and no friends or family raising alarms despite them being missing for months, especially during a period of viral crisis related to Digimon, it still comes across as a narrative choice to focus on the original chosen children, even if the execution isn't polished.