Futanari Chaldea
Can you tame the Legends?
Chapter 1
by 
ARKangello
The Chaldea Security Organisation is one that endeavours to protect all of Pan Human History from temporal attacks, to ensure that humanity continues to move towards a future that will always be there if they have anything to say about it. But then the bombs went off.
Now Chaldea stands upon a precipice. The vast majority of their staff, and most importantly their stock of Masters, have all been killed or injured so severely that they have had to be interned into cryo until they can be healed or revived. The last remaining Master(s?), accompanied by Mashu Kyrielight, managed to survive this catastrophe and return from the Fuyuki Singularity with a Holy Grail that was used to repair a significant amount of the damage done to the facility.
With one exception. The Fate Summoning System, responsible for providing Masters with Servants, the Heroic Spirits that shall fight on the front lines against all the horrific monsters that stand against them, retained a small amount of damage. Not enough to break it. Not enough to prevent it from properly functioning. Just... a glitch.
A very specific glitch. Every servant summoned forth by the glitching system was summoned with certain changes. Specifically, all of them were summoned as a hermaphrodite, a futanari, a chick with a dick and balls. Now this of course was new to the servants themselves, most of them unused to either being female, or having cocks swinging between their legs, and accompanying these new genitalia came strange new urges. Urges to use these new appendages. Futanari are inherently hierarchical creatures, and within these hierarchies positions were decided by only two methods. Battle and Sex.
Now the last Master(s?) of Chaldea are faced with a slew of servants all jockeying for dominance, and with their weapons and wieners prepared, and all they have are a few command seals and their own skills. However will they cope?
"All characters in this story are at least 18 years old. In the event that they are canonically underage, their appearance here is in an AU in which they are of age."