January
Zepar appears in Seraphix and begins to take control of it. Digitization of the material world begins. Seraphix will eventually become a closed-off space. Zepar discovers Kiara, who had come together with the medical team, and chose her as its target for possession, hiding within her. It was to heal its wound from the Time Temple.


February
Days of violence and chaos. The digitization of the oil rig is progressing bit by bit. Kiara has become aware of her spiritual corruption but is yet trying her best as a therapist.
March
Morals within Seraphix have finally collapsed. Zepar reveals its name to Kiara and establishes a relationship of proper co-existence (domination). Zepar finds out about the experiences of the Kiara from the Moon from the records of parallel words. Because it would be extremely effective, it synchronizes them and draws out her abilities.

The incident of the Moon Cell's Kiara was an imaginary numbers phenomenon (lost from the observing universe, but remains like a barely existing old book in the recording universe), so Zepar would not have been able to see it normally, but as its observation target was Kiara, a Beast candidate (Authority of the Beast: resistance to parallel world and time regression attacks, in other words resistance to instant death of fate. To deal with the record being handled as an imaginary numbers phenomenon, even if the Kiara incident is no more, the records of Kiara herself will not disappear), it was possible. Zepar, really had no luck.

The digitization of Seraphix now turns to conversion to SE.RA.PH. Even if Seraphix sinks into the ocean, it can endure thanks to digitization. Time within SE.RA.PH begins to change. Kiara (Zepar) begins to form a cult from the surviving members of the staff.
At the end of a lot of trial and error by Kiara, the observatory was opened. The vice-director fell to fear and self-preservation and was unable to start it up. The last lever was pulled by a man specializing in dirty jobs. (This man was the only one amongst the staff that did not have a physical relationship with Kiara)

The Servant summonings begin. The 100x time dilation begins.

The Holy Grail War begins~ Kiara's predation begins. After this, Zepar loses his freedom.
April
In order to ensure the Holy Grail War goes smoothly, Kiara salvages BB (GO). Melt and Lip are also salvaged successfully to serve as pawns.

As the administrator of SE.RA.PH, BB/GO informs the surviving staff of the current situation. "A fun game is about to begin, if you take advantage of it perhaps you may be able to survive?"

"Ah, but as the information density within SE.RA.PH is several dozen times that of the outside, 100 minutes here is equal to 1 minute on the outside. In other words---" The rescue that will come in May is 50 years in the future, she tells them.

The internal strife that ensued amongst the Seraphix staff that took shelter in the control room was such a sad thing. Beckman (being led around the nose by Kiara), takes control of the group. After that, it's Beckman's Mist Theater. Staff opposing him are chased out to be devoured by the attacking programs, and attacks are ordered on Melt and co. who are looking around SE.RA.PH.
BB/GO, pretending to follow Kiara, is treated as an enemy by Melt and Lip who had been turned into Sentinels. But with her salvaged body, she is unable to oppose Kiara and chooses neutrality for now, working hard to grasp the conditions within SE.RA.PH.

In the end, Melt and co. go against Kiara. As a result, Melt is scheduled for disposal and Lip is put in bindings, her free will sealed.

After countless Holy Grail Wars, Kiara gains the immature form of a Beast. With this she begins the process of creating her "true body". SE.RA.PH itself will be her next body for the sake of transforming into a Beast. SE.RA.PH begins to turn into Kiara. The human that is Sesshouin Kiara is, at this time, an extension that can be discarded at any time. (The one who clung to this extension was Zepar)

The Moon Cell detects the presence of a Beast and becomes aware of the incident. Since it is a Beast incident that originated from the Moon Cell, it dispatches BB as CCC (Special Disposal). Although BB was sent to SE.RA.PH, she is aware that she can no longer do anything personally to Kiara, who has become a megastructure. She sets up an Order to defeat Kiara through the cooperation of the local humans.

BB and BB/GO come into contact. For their respective goals, they swap places. After this, the managing AI of SE.RA.PH is the Moon Cell BB. So that the swap is not found out by Kiara, she behaves completely as "the management AI obedient to Kiara".

Oh, by the way, Zepa whoever disappears around here.

The Holy Grail War keeps going.
Kiara has finally become SE.RA.PH, completely. As preparations are complete, it's time to GO! To the Mariana Trench of 2030 AD.

Kiara's greatest mistake, or perhaps oversight. Mdm Trapine (BB's secret helper) reaches the communications room alone, and sends out an SOS to Chaldea even while being decomposed into data. Out of respect for the strength of humanity that Mdm Trapine demonstrated in her last moments, BB buries her with care. BB swears that this incident will be dealt with as an imaginary numbers phenomenon and all of the staff saved, as if "nothing had happened". But not Zepar and Kiara.

Kiara, acknowledging that Chaldea has become aware of the abnormalities in Seraphix, leaves the countermeasures to BB. BB reports to Kiara that she'll bully them , but of course has summoned to SE.RA.PH, Chaldea's Master as her only hope.

Chaldea's Master shifts over to SE.RA.PH but (because of Kiara's suppression) their Servants are scattered all over SE.RA.PH and defeated. Finding themselves alone at the entrance to SE.RA.PH, the Master escapes the maddened Servants and makes their way to the church somehow. There, they meet Meltlilith, who had been scheduled for disposal and was about to stop functioning from lack of magical energy.

The two, contract. Because she had been reset, Meltlilith was very obedient & Level 1.

Their battle begins. To describe how desperate it was, from Melt's point of view it was like "Challenging the entire Kamen Rider Corps as a Shocker battle grunt (alone)", that level of an impossible game. It was tough, it was scary. But they did their best. Even so, for her, the entire incident is all shining so brightly.

Various things happened and time has run out. SE.RA.PH pierces through the trench. Right now even though they have saved Passionlip, they could not remove the bindings. The three reach the observatory and are destroyed by Kiara. Melt makes a desperate, one-time flight with Lip's assistance.
30 minutes, before the main story starts
With a crash of falling lightning, Melt arrives at SE.RA.PH, two hours before in real time. She contacts BB who had detected the anomaly and shares her own memories, discussing a secret plan for battle. The "Don't let Kiara know, and kill Kiara at the end" plan begins.

BB begins to create the Slots and KP. From Kiara's perspective, they seem to be for the purpose of "bullying Chaldea". Melt hurries to the church and meets the Melt scheduled for disposal --- a lonely farewell.

Chaldea's Master shifts to SE.RA.PH.

BB, hearing from Melt that Kiara would scatter the Servants, forcefully picks and sends along (secretly) three Servants affiliated with Chaldea. In order to keep Kiara from becoming alert to BB's cooperation, the Servants are fed with mistaken information that "we were the ones that came along with Master".

And so, the Emperor, Miko and Red Jacket that were sent flying were captured by Kiara's hand... not really, actually they were retrieved by BB/GO, who heard of it from BB. (It's complicated!)

...and that is how the story went.