Before I start I cannot improve an R-18 chapter with chatgpt and I will not use another gramatical corrector. Then I am not an expert in R-18 the only thing I know comes from the hentai and chapter R-18 of a story. On this good reading.

  Pov Dia,

  The rest of the evening was quite quiet. I discovered a musical instrument typical of this country called a biwa.

  I was able to test it and I liked it even if I should train to master it. I already have inspiration for music that I could do with this instrument.

  After trying the biwa we went to bed, and as usual I slept in the same bed as Rimuru and Sera. Inari and Kurama were a bit shocked, but when we expined that we have done it since our childhood they accepted and not look further.

  I do not know at what time, but I woke up with a very uncomfortable feeling. My head was spinning and I was getting hot.

  I have no idea what is happening to me, but when I take a breath to try to calm my condition the smell of Rimuru entered my nose and the feeling became worse.

  Plus I feel my pussy starting to itch. I tried to get my hand close to the pce without making too sudden a movement not to wake the other two.

  When my hand reached the destination of started rubbing it against my pussy very slowly.

  It was an unknown sensation but not uncomfortable, I would even say it is incredible.

  The more time passes, the more I want this feeling.

  At one time I reach an area that after an analysis is my clitoris and the sensation to give by rubbing this pce is even more pleasant than the sensations before.

  Dia:" Mmmph!"

  Not good if it continues I will wake Rimuru and Sera but the feeling I want more.

  Dia:" Mmmph! Mmmph! Mmmph!"

  I begin to lose control of my body, I already know that if I were standing I would fall because my legs will no longer hold.

  Feeling something that is about to come, I started to increase the speed of my fingers I even feel that a finger has entered my pussy but I do not care because I lose the head with the feeling and smell of Rimuru and Sera.

  Dia:" Mmmmmmmmmmmpppppppphhhhhhhh!"

  It took a little while to regain my mind and I understood one thing I just masturbated and more I did it next to Sera and Rimuru.

  Then reality hits me it is not good with all the liquid that my pussy to let go in my pleasure I would still wake up that it will wet.

  I’m gonna have to bother them so I can go dry my stuff.

  I left the room hurriedly, while of course being careful not to wake my wives.

  Pov Rimuru,

  I know what just happened, but I’m having a hard time realizing it.

  Great Sage woke me up in the middle of the night because Dia-sama was awake.

  It would be unworthy of a maid to wake up after her mistress.

  I was waiting to prepare for a request or something until I felt some Dia-sama movement. She didn’t move much, but I could feel her moving.

  Dia:" Mmmph!"

  ???

  Rimuru:' Great sage can you tell me what Dia-sama is doing. '

  Great Sage: [It would seem that she does what is called masturbation.]

  It is true she is already 13 years old and it is quite normal that the body begins to react in this way.

  Should I help her relieve herself or should I let her make the request.

  It’s too hard even if I have to take care of my mistress I cannot encroach on her privacy.

  While I was thinking I could say that Di-sama had cumming.

  She probably got up to get rid of all the mess she had made.

  I think I will talk to Sera-sama about this event because after all she is as much Dia-sama’s wife as I am. She even has a rank above because she is his first wife.

  I wonder if Sera-sama has ever masturbated?

  The_Absolu