To OP. Decided to make it in a format of a diary. What do you think of it
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>>6514
Personal summoning log
Day 1: After a few months of research my experiments have yielded results. I have summoned a young or at the least young looking succubus. She appeared inside the summoning circle completely naked. The minute she saw me she turned around, got on all fours and lifted her ass in the air showing me both of her holes then she told me that for the summoning to be completed I need to seal our contract by fucking her and then cumming inside of her which did coincide with what I have learned during my research.
To make sure she did not pull anything I used a spell that summoned chains that would restrain her movement. I was expecting her to resist being tied up but instead the only thing she did was moving one of her hands towards her pussy and then kept rubbing it and moaning as she was chained face down to the ground. After I made sure she was restrained I approached the succubus and after removing my pants I rammed my cock inside her already dripping pussy. It accepted my dick with no resistance and then I felt it changing its insides in such a way that it would fit my dick perfectly making sure that each of my thrusts would bring me maximum pleasure. It did not take me long to start cumming, her tiny slit was unable to contain the volume of cum that I was pumping in it and as such I could see my cum oozing out of every available opening, when I pulled my dick out it was as if a dam was opened as the content of the pussy spilled out. As far as the succubus is concerned, she apparently climaxed simply from me cumming inside of her. More tests are necessary.

Day 2: Most of yesterday was spent fucking the succubus that I now know is called Aisha for the rest of the day until my stamina and life force were almost depleted. Aisha’s lust was insatiable, she would do any kind of depraved thing or accept any kind of abuse as long as it would lead to me cumming inside of her. I also have learned that when Aisha is in heat her body is secreting a type of pheromone/aphrodisiac that would ensure that I would remain hard for what I can assume indefinite time. From today I will start experiments to check Aisha’s durability. From all the books I have read I learned that succubuses are very durable, can survive even the most grievous of wounds and as long as they receive nourishment in the form of cum they will even start regenerating lost limbs.
In today's trial I did not go too far. I simply put her on an operation table and using the bone saw I cut off both of her wings. Aisha did squirm but she accepted what I was doing with open arms and I did not have to restrain her. Apparently she is a big masochist so all throughout the procedure she squirmed on the table using her hands to play with her pussy and breasts. By the time I was done with the operation she had orgasmed more than five times. I then got on top of her and after lifting her pelvic up I fucked her ass for the first time. Her ass was even tighter and forcing my way into it forcefully felt even better.

Day 6: Seeing that her wings have started to regenerate I knew I could proceed with my next durability experiment. I have placed Aisha inside a modified torture rack. Then using my magic I started to operate the rollers. At first Aisha did not show much reaction to what was happening, but when her hand and leg bones started to pop from the pressure that was applied to it she started to moan like a common whore. Her moaning encourages me to push even further and I do, I activate the rollers to the maximum and let them do their job. I see Aisha's hands and legs stretch and stretch. First I saw her bones get completely dislocated then her skin at the joints started to become at first light purple and getting darker and darker the more it stretched. All of that culminated in a gorgeous and gruesome view of all four of her limbs tearing off squirting blood and her girl-cum all over the workshop.

Day 8: Today I woke up with Aisha lying on top of me. Ever since she lost her arms and legs I have been using her as a body pillow always ready to be used. Yesterday before going to sleep I attached a noose that connected to the ceiling to her neck , so with a flick of my hand the rope shot up, hoisting Aisha up right into the air. I let her hang a sway there for a bit, seeing her choke and gurgle got me hard straight away. After she came to a stop right above my fully erect dick I continued to use telekinesis to control the rope lowering and lifting Aisha onto my dick. Whenever I lifted her up I purposefully made sure that she was high enough to have no support but the tip of my dick that was barely enough to keep her conscious.

Day 20: I started my day by slicing Aisha's pussy off and then using it instead of bacon for my breakfast. Then I scooped out her right eye and then I proceeded to fuck the new hole until I was sure that her head was full of nothing else but my cum. Aisha tried to talk but what came out was best described as gibberish while her body was rocked by waves of pleasure.

Day 40: By now Aisha has been reduced to a slobbering mess which was not able to even string three words together. Throughout these forty days I have harvested plenty of materials from her so I would have no issue funding my experiments further. So I decided to completely dissect her and harvest her whole body. Her internal organs and bones were sold for potion ingredients and magic components, her meat was extremely tender and as such most nobles would pay a high price for it, the skin I took to a taxidermist and made a sex doll out of it. Still thinking on what kind of creature I should summon next.

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Name: Sakura(Left),Niko(centr),Hina(right)
Age: 15
Traits: Excited, slutty, masochistic, submissive, willing to sacrifice their life to be bred, honor students, virgin.
Setting: In this world the man's status is decided by the size of their dick and the amount of cum they produce. Women bodys are more durable, flexible and stretchable. Most women compete with each other by excelling in all aspects of their life just to be able to become breeding slutsfor the most high status males. Due to the size of the males dick and the volume of ejaculation not all of the breeding sluts survive but those who do and bear offspring become the males property and have a higher social status. You have the biggest dick in the country (big but nothing too ridiculous). A local school sends three of their brightest and best looking students as your new breeding slaves. They arrive at your home in the evening. Will any of them survive the breeding session?
Request: Describe sex scenes in more details please. This should be cum inflation heavy story. As far as the ways for the girls to die I would love to see one to be drowned in cum and maybe a stomach explosion