The Eternal Moon Prison
  Reimu was in a long hallway of the mansion known as Eientei. The moon in the night sky disappeared and was replaced by a fake version and now she was searching those who were responsible for it. She already defeated the moon rabbit Reisen Udongein Inaba who was a servant of the mansion's mistress and tried to fend her off but failed. And now Reimu was flying through the hallway looking for said mistress. But there was one problem the shrine maiden noticed…
 It felt like the hallway was endless. No matter how far she was flying it looked like she didn't make any progress at all because everything looked the same. However even worse was the fact that there were so many doors that it would take an eternity to check all of them.
 "This won't work." Reimu said stopping in the air. She then landed on the floor and looked around before sighing. "Looks like I have no other choice than checking out every single room." the miko said slightly annoyed before proceeding to the first door.
 When she opened it the first thing she noticed was that it was very dim inside the room. But she could see that it looked very similar to the workplace of a doctor. The shrine maiden then walked towards a desk. There were different documents scattered all over it. "I thought this was a mansion so why is there a room that makes it look like a clinic?" Reimu asked herself. "Well, here is nothing interesting, so I can leave now." "Unfortunately, I can't allow you to do that." As she heard the voice Reimu turned around only to get pushed against the wall. Opening her eyes the shrine maiden saw a tall woman who was wearing a red and blue colored skirt and a nurse cap on her head. She also had long grey silver hair in form of a braid. "I can't allow an intruder to interfere in our affairs." "W-who are you?" Reimu asked as she tried to to free herself from the woman's strong grip. "I am Eirin Yagokoro. I am a medical genius who once lived on the moon. But I came to Earth to support the princess who lives here in exile. Not that this matters for you. Because you won't be able to leave this place." Eirin then pulled out a syringe which contained a purple liquid. Reimu tried to fight back but there was nothing she could do. The miko winced as Eirin pierced her skin with the syringe and injected the fluid into her body. The fluid immediately showed effect. As Eirin let go of Reimu, the shrine maiden felt completely drained from energy as she dropped on the floor. "What… what was… in that… syringe…?" Reimu asked with a weak voice as she tried to raise her head.
 Eirin lifted up the miko's head and forced her to take a small dark blue pill. Since she was to weak to show any kind of resistance Reimu had to accept the drug and gulped it down easily. "Sweet dreams." Eirin whispered to Reimu which was the last thing she heard before she lost her consciousness. The lunarian then laid the miko's body on the floor. Reimu's body was shortly glowing in a blue color and after the glowing finished she began to shrink. The shrinking process stopped as she was the size of Eirin's palm. She then picked up the shrunken shrine maiden and inspected her a little bit closer. "Now you are completely defenseless, shrine maiden. I will bring you to the princess who will decide about your fate." Eirin stated. "But there is only one way how I can transport you to her." The pharmacist then lifted her skirt and put Reimu into her underwear before she went to the room of the princess.
 Eirin was completely flustered as she reached the door of the princess' room. That was because her tight panties pressed the unconscious miko against her pussy which stimulated the pharmacist. But she knew that she couldn't act like that in front of the princess so she tried to calm down a bit. She then knocked on the door. "Who is there?" a voice said. "It's me, my princess." Eirin responded. "Come in." The lunarian pharmacist entered the room and saw the princess of Eientei, Kaguya Houraisan, who was looking out of the window at the true moon. "So?" Kaguya began as she turned around and approached Eirin. "What is it that you come to me?" "There was an intruder who tried to interfere. But now she can't do anything anymore. However instead of simply getting rid of her I decided to bring her to you and you decide about her fate since you are the mistress of this place." Eirin told her. "Good, but where is that intruder you mentioned. I can't see her nowhere." the lunarian princess asked her friend. Eirin responded by lifting her skirt and putting her hand into her panties. Kaguya couldn't help but blush as she saw what the woman in front of her was doing. "Was it really necessary to put her into your underwear?" "I thought it was the best way to bring her to you." Eirin stated as she finally managed it to pull Reimu out of her panties and presented her to the princess. "So you have shrunk her?" "Yes. And once a certain amount of time has passed she will shrink even more. After becoming even smaller she will also get her consciousness back. But you don't have to worry about the time limit. You will have enough time to make a decision on what you want to do with her. And even then she can't do much at all because the pill I gave her also sealed her powers." the pharmacist stated as she handed the shrunken girl over to Kaguya. "Well, I already know what I will do with her. But I will need my privacy, so make sure that nobody will disturb me until I'm done. If I need something I will call you." "As you wish, princess." Eirin then left Kaguya alone with the shrunken Reimu, closing the door behind herself. She then put a spell on the door which ensured that only Kaguya herself could open it. "I think I should treat Udonge's injuries now." Eirin said to herself before she set off to take care of the moon rabbit.
 "Well then. I think I should begin now." Kaguya said as she put Reimu on her bed. The princess then stripped completely naked, grabbed the shrunken girl and laid down on her bed. "So you thought you could stop us and take the true moon back. For that you have to be punished. But before that, I will use you as a toy to pleasure myself." Kaguya said as she spread her legs apart revealing her pussy. "I really love to masturbate because it feels so good when you get an orgasm. And using you as a toy will make me feel even better. And let me assure you that I will completely drench you with my cum!" With that said the princess began to rub the unconscious and shrunken girl against her pussy. She was blushing just from the tiny girl touching her bare cunt. "Haaaaa… Haaaaaaaa…" Kaguya was moaning a lot as she traced her pussy with Reimu's head. She used her free hand to squeeze her breasts. It didn't take long until her nipples were fully erected. Every time she squeezed one of her breasts she let out a moan, all while still rubbing the shrine maiden against her pussy. The princess then shortly stopped pleasuring herself.
 "I think I should rub you against the insides of my pussy now." Kaguya then opened her pussy revealing the pink fleshy insides and her clit. The princess then rubbed Reimu against her naked insides which stimulated her more than before where she only pressed her against her outsides. Kaguya became hotter as she increased the pace with which she rubbed the tiny girl against her genitals. "Ahhhhhhh…" Kaguya was moaning lewdly as she began to rub the miko's head against her clit. As she continued the princess noticed that cum was already coming out of her pussy.
 "Alright… time for the best part." Kaguya said while panting. She then spread her pussy wide open and pushed Reimu into it. "AHHHHHH!" The princess let out a very loud moan. Reimu's upper body was completely swallowed by Kaguya's pussy, only her hips and legs were outside. The princess then lifted her own hips and swayed sideways resulting into the shrine maiden’s lifeless legs dangling around. A little bit of her cum was squirting out as well. Kaguya continued masturbating by thrusting the unconscious girl in her pussy back and forth. "THIS FEELS SO GOOD!!" the princess exclaimed as more white goo squirted out, a little bit landing on Kaguya's finger. But she simply sucked it off. She then began to thrust Reimu faster back and forth which made the princess hornier. She was very close on the verge of an orgasm. "I'M CUMMING!!" Kaguya screamed as a lot of cum shot out of her pussy. After her orgasm Kaguya laid sprawled out on her bed, completely exhausted and panting and sweating heavily. "That… was awesome…" she said with a quiet voice. The blanket was completely drenched with cum. As the princess laid there, Reimu slowly slipped out of her pussy. The shrine maiden was completely soaked with cum. As the tiny girl was fully out of Kaguya's pussy she was showered by a gigantic stream of white goo which was blocked by her body.
 After Kaguya collected herself she took the wet body of the shrunken shrine maiden and held her in front of her face. "I will be honest. I really would like to keep you because masturbating makes way more fun when I use you as my toy. But you are still an intruder who tried to thwart our plans. Now you will receive your punishment!" As Kaguya finished her speech she shoved Reimu again head first into her pussy which was still dripping with cum. However this time she pushed her whole body into her pussy. As Reimu was completely inside her, the princess' innards began to pull the miko deeper into her body. Kaguya could follow her movements because the shrine maiden formed a visible bulge. The bulge stopped moving as she was above Kaguya's pussy. The princess knew exactly where the shrunken girl was right now. "She is already in my womb." Kaguya stated. The princess flinched a little bit as the bulge suddenly glowed in a blue color. But she calmed down immediately. "Oh yeah. This must be the second shrinking Eirin mentioned." After the glow stopped, Reimu was shrinking down to the size of an ant and the bulge disappeared.
 "Urgh…" Reimu groaned as she got her consciousness back. Looking around the only thing she could saw was the color pink. "Where am I?" "Oh. Looks like you are finally awake." Kaguya's voice sounded. "Who are you?" Reimu exclaimed. "I am Kaguya Houraisan. I once was the princess of the moon, but ever since that one incident I'm living in exile here on Earth." the princess told her prisoner. "I have heard that you tried to interfere in our affairs. But thankfully my friend Eirin managed it to take care of you." "Taking care of me? Wait a second, where the hell am I?" Kaguya smirked as she heard that. "You are in my womb right now. Eirin gave you a special pill which shrank you down to the size of a palm. And before you awoke you shrank again but I have no idea how tall you are right now." Reimu couldn't believe what she just heard. She was really shocked and also very embarrassed as she heard that she was in the uterus of some woman. "This… this can't be true…" Reimu muttered. "Believe me, it is true. This is your punishment for intruding in my mansion. Oh, and also: Before I shoved you into my womb and you shrank the second time I used your unconscious body to masturbate. Well, this is actually nothing new because I really like to masturbate and I do it very often. But when I used you to do it, I felt even more pleasuring than normal. If I'm right then you should still be drenched with my cum."
 Hearing that Reimu checked out her body and was completely disgusted as she noticed that her whole body was dripping with cum and she smelled really bad. "EWWWWW! This is disgusting!" Reimu felt completely uncomfortable in her body, knowing that she has been used as a masturbation toy. "You shouldn't even try to resist. There is no way that you can get out of my body." Kaguya spoke. "Even though I am not in the best position right now, that doesn't mean that I am going to give up." the shrine maiden said completely encouraged. She then concentrated for a short time. "Take that!" Reimu shouted while extending both of her arms forward. Nothing was happening. "… Wha… What is going on? Why can't I use my powers?" the shrine maiden asked. "Well, Eirin said that the pill would not only shrink you but also seal your powers." Kaguya stated. Reimu then thought about what she could do. Looks like I have to find out a way normally the shrine maiden thought. As she looked around she found a relatively big opening in the wall. This must be the exit Reimu thought. Because her flying ability was sealed as well she had no other choice than to walk. And it wasn't actually that easy for the miko to keep her footing because of the pulsating fleshy ground. After a while she finally reached the opening and passed through it. "If I'm right, then this has to be the birth canal." Reimu said with relief. But Kaguya knew better.
 Silly shrine maiden. You may think that you have reached my birth canal. But in truth you are walking in my fallopian tube right now Kaguya thought while smiling, knowing that the shrine maiden wasn't aware where exactly she was.
 While she tried to make it through the fleshy hallway, Reimu thought about what she would do if she made it out of Kaguya's body. Even if she made it out, Kaguya would probably just shove her back into her pussy again. And since her powers were sealed she had nothing to defend herself. Her only option was to wait until the princess fell asleep which would allow the shrunken miko to escape without being noticed.
 "Urgh… it's so hot in here. Even in hell it wouldn't be so hot." Reimu groaned as she continued walking. She was sweating a lot. After using her right arm to wipe the sweat from her face, the shrine maiden stopped walking as she saw another hole. This must be the exit Reimu thought as she ran towards the hole. As she stood in front of it she didn't hesitate and passed the hole.
 The shrine maiden found herself in a small room. There was no other hole, she was in a impasse. "Damn! That was the wrong way!" Reimu said annoyed. Suddenly the hole behind her was closing. "NO, STOP!" the miko shouted trying to get out. But she couldn't stop the hole from closing. "Great, and how am I supposed to get out of here now?" Reimu groaned. She then winced as something sticky touched her feet. "Wh-what is that?!" the miko squealed. The gooey fluid was emitting a very strong smell. Suddenly she heard Kaguya's voice again. "Welcome to my ovary, shrine maiden. You probably thought that you were in my birth canal as you left my womb. Unfortunately, you took the wrong hole. Instead of getting out of my body, you stumbled into my fallopian tube which led you to my ovary. Consider it as your new home because you won't manage it to get out of it!" Kaguya explained. Reimu was completely shocked as she heard that while at the same time she began to feel dizzy. She fell on the ground, feeling completely exhausted and breathing heavily.
 "Wh… what is… going on…? Why… am I… feeling… so weak…?" Reimu asked weakly. Meanwhile the sticky fluid had covered the shrine maiden up to her knees. "You are feeling so drained because of my estrogen. They will drain your energy until you are empty." the princess informed the miko. "There is also another thing I should tell you: The fluid will not only drain your energy but it will also completely decompose and absorb your body, turning you into an ovum. My ovary will be the last place you will ever have been!"
 Reimu was almost unconscious and the estrogen had already devoured the lower half of her body. "I don't want to become an ovum. I must somehow get out of here. But I'm too weak to move…" Reimu whispered to herself with a very quiet voice. It was impossible for her to move forward because the sticky fluid held her in place.
 "But there is still a little hope for you. Because there may come the time where I want a child and if you are lucky the ovum which gets fertilized will be you. Then I will give birth to you and take care of you like a very responsible mother." Kaguya told the shrunken girl. "But for now it's time to say goodbye. Farewell, my tiny intruder!"
 Reimu's body was almost completely swallowed by the estrogens. Only her head hadn't been devoured as she tried for a final time to move. But she had no energy anymore. It's over… I can't do anything anymore… the shrine maiden thought as the fluid began to engulf her head. Goodbye Gensokyo… I will never ever forget you…
 And with that Reimu had been completely swallowed by Kaguya's estrogens. It didn't take long until the fluid regressed the miko's body to an ovum. The egg then was brought to the other ones in the princess' ovary.
 As Kaguya felt that her shrunken prisoner wasn't there anymore she got ready to go to bed. However before she went to sleep she gazed one more time at the true full moon. "This moon will be eternal. Just like my intruder has become eternal by being regressed to an ovum in my body." the princess said while patting the area of her body where her womb and ovaries were. She then laid down in her bed and covered her naked body with the blanket which was wet from her orgasm and fell asleep.