After returning from the last lostbelt Gudako returns to her room with Mash for some time alone to rest, well not so alone considering her ability which made her a semi Throne of Heroes allow servants to stay in her and summoned whenever she needs it and when the servants wills it, which means some additional servants may but in her alone time. As she made her way to her room, she reflects on how it got to this situation.
--------------------------Some time ago-----------------------
She found the ability one day accidentally when Kiyohime was complaining why she wasn't brought with her 'Lord Anchin' everywhere she went at all times, while Gudako was trying to persuade the persistent servant trying to point out the fact that she did not have the ability suddenly she felt her magic circuits activating and prana flooding through them, at the same time Kiyohime in front of her is suddenly shocked and absorbed into her body. Surprised and shocked by the events Gudako instantly checked her own body while hearing Kiyohime's own surprised and joyful voice inside her. "Ahh, is this truly happening did I truly become one with Lord Anchin, if this is truly real then my love and I will never be separated for eternity."
Meanwhile the nearby servants flew into a panic with the dissapearence of Kiyohime with a flash of light. Most thought it was another invasion from an enemy the nearby servants instantly leapt in front of me to guard against the enemy. After processing what was happening I started to explain the situation and calm the servants while hoping for a more detailed explanation about my current condition from my specialised servants I explained that Kiyohime did not disappear however was somehow absorbed in my body like a sponge absorbs water. Hearing the explanation while having doubts they calmed down compared from before, however they are still anxious because of my unknown condition which is shown when they hastily brought me to da Vinci and Sherlock.
Luckily both of them were in the same room discussing about another project when we barged into the room. While they are surprised they know better that it should be an emergency if courtesies are ignored so they asked what was the problem straight to the point. And after hearing the entire story they asked if it's possible to exit my body, to that I respond that Kiyohime doesn't want to be separated from me. To that reply they said for me to try to summon her without using any spells whatsoever, as I will it I inadvertently felt my magic circuits activating as prana flowing through them and before anyone knew it Kiyohime is in front of us (Mash, Me, Fou, Sherlock, da Vinci) in her usual state plus a little surprised and shaken look on her face.
"What is the meaning of this my love why did you reject being one with me, is it because of a thieving cat? If so let me incinerate her before becoming one with you again." [Kiyohime]. Before she could say anything else with a crazed look on her face I interrupted her with a hug that she didn't expect, correction no one in the room expected. As for why I did it call it a hunch that no matter what I say she won't listen which is supported by the fact her Madness Enhancement skill is ranked EX, hence the emotional touching physical route which worked, so I say to her with the most earnest eyes I can muster "It's not like I reject you being one with me, however it's about finding out what exactly happened before and what is happening with my body and you so that we can be certain nothing bad falls upon us."
After hearing what I say she calms down with noticeable red blush on her face as a result of being moved by my earnest words "Very well then my love, I shall endure the pain of being apart from you if you wish however if it is proven that it is harmless then I am to be one with you again as fast as possible."[Kiyohime] As we heard that we were relieved and assured that Kiyohime won't be on a rampage attempting to kill all female on sight due to suspecting her to be the one who 'stole' me from her. And so we ran some tests with me interacting with other servants with Kiyohime watching me so that I won't be 'stolen' by the other servants.
From the tests we can conclude 10 things from the results. Which is :
1. My body can somehow store servants via magecraft making me a living carrier for servants.
2. Servants can enter and exit my body with my permission or when I will it. For example in battle I can suddenly 'host' my servant without them wanting or knowing beforehand.
3. Not all servants are able to enter, all female servants can enter the genderless (ex: Enkidu) and gender confusing (ex: Chevalier d'Eon) are able to, and only a few of the male are able to enter for unkown reasons.
4. According to the servants able to enter my body, the space they inhabit made of rooms that are customizable just by a thought of the rooms original inhabitant and me, the rooms are all linked by a space and they can interact with each other. I can also hear 'see' everything that happens inside me which is sort of disturbing because they can't hide anything from me but they don't mind rather they seemed to be inviting for me to invade their privacy.
5. Items can also be brought into me, wait am I going to be an emergency warehouse now. Because already Medea is hauling her items inside her room, with the other servants folowing her example.
6. All wounds heal for the servants I host, it doesn't matter even if it's a curse or an affliction it heals nonetheless. However it only cures what is considered from foreign causes which means it doesn't cures diseases that are caused by the body itself, however it does cures disease caused by medicine.
7. I am able to use the power of all my servant including parameter, skills and noble phantasm. However if I use the power of a servant I am unable to host the parameters are all lowered including the skills and noble phantasm levels.The degradation is mitigated by our bond levels but the best I can do is the original levels when I first summon the servant. On the other hand if use the power of a servant I can host I get all parameter and skills at their original level from the start, I can also strengthen their levels with the bond levels by one rank for all of the parameters but not the skill with a few exceptions.
8. I can only use 1 servant's power at a time I also take on their signature appearances such as clothes, hair color, style however it seems I am so synched with the servants I host I can completely turn my body into the same as them and keep it that way even after I unuse their powers.
9. I can hand control of my body completely to the servants I host. Only 1 servant can control my body at a time. I can also somehow interact with the servants I host, like hitting them for stupid ideas.
10. For some reason I'm suddenly interested in cooking and when I gave it a try even EMIYA and Tamamo Cat admitted that I'm a natural and only needed a few pointers from them before surpassing them in cooking. Which gave me a few headache, because from that moment the servants I host demanded that I would cook for them unless that I am unable to cook, however I managed to get through by using Hassan of Hundred Persona's Noble Phantasm which allows me to split myself into a maximum of 100 people with lowered parameters but at least still as strong as a normal person.
On a side note someone dropped by to give a remark which is Zelretch, yes THE Zelretch Kischur Schweinorg the one who holds the Second True Magic : the Kaleidoscope.Which allows him to see, draw power upon and even travel between parallel worlds. Anyways he remarked that when I was using the power of my servants it resembled when one is using a class card. An object inspired by the servant summoning ritual which doesn't summon the heroic spirit however encapsulates the heroic spirits power which is used 2 ways :
Include: grants the heroic spirit's weapon or noble phantasm to the user albeit with a degradation to a degree.
Install: grants the appearance, skill and noble phantasm to the user however the power is only a fraction of the said heroic spirit. However the user is in danger of an identity erosion when using this version of the power.
After hearing the explanation of the class cards there is one thought that crossed my head, that is 'For a normal magus it's useful but for me it's useless, because the danger of an identity erosion in exchange for a 'fraction' of a heroic spirit's power I can get that and more with no danger at all. So one word of evaluation USELESS.' After thinking I open my mouth to say to Zelretch "My opinion on that mystic code is 'showy but useless'."
As Zelretch heard that he nods as he agrees with my opinion as the identity erosion is just not worth the increase of power is miniscule compared to the danger for us. After saying his greetings he suddenly vanished in a flash of a light which is coloured like a rainbow.
At that time I did not know that Zelretch was known as an infamous troll who pranks upon everyone he is interested in, and the meaning
of him even appearing before you is to prepare for the worst like losing your sanity due to his pranking.