2 years later
Luna woke up to the sounds of her mother giving birth again. it was a sound she was familiar with by now. she walked over to the mirror and looked at herself. she looked about the size of a 10-year-old child. her pussy tentacles had gotten bigger and her hair tentacles had as well. she had a slender frame and cute butt. she was very athletic loving to run and play with the animals in the garden just outside of the cave she called home. lately, her nipples had been itchy and were puffy and sensitive. if she squeezed them it made her feel tingly which she liked.
She had woken up because she couldn't sleep. something in her lower tummy didn't feel right like there were butterflies in there and her tentacles above her crotch had gotten long for some reason. she went to her mom who was recovering from giving birth "mommy?" she said
Eve looked at the small girl. "yes sweetheart what is it?" eve asked her clit dick visibly hard. she hadn't noticed how much some of her older kids had matured but it was making her feel something she had never felt before. a desire to be the breeder instead of the bred.
"My tummy feels funny and my tentacles won't settle down." Luna couldn't take her eyes off her mother's cock.
"that's perfectly natural honey. come here and let mommy take care of you" the small girl climbed onto her mother and started suckling from her huge breasts. she knew she was a bit old for this behavior but she wanted to do it. she started to feel tingly between her legs as eve ran her hand threw the little girl's ‘hair’. "Your father said you guys would mature at a much younger age and when that happened your need to breed would be nearly unstoppable. your probably just starting to feel that need. that means your old enough to have babies like mommy does."
the little girl looked at her mother. hearing her talk about it made the tingling worse and she started to feel like she had peed herself even though she knew she didn't. "so I can have babies with mommy?" the little girl asked gently caressing her mother's cocks with her tentacles.
"only if that's what you want. you could wait and pick one of your siblings or I'm sure your daddy would do it too." Eve said loving the attention her cock was getting.
"I want mommy's cock." the little girl said using her tentacles to help guide it to her entrance before impaling herself on it. she screamed in pleasure as she bounced up and down. this seemed to wake a few of her siblings and they couldn't believe what they were seeing. the ones around Luna's age felt the same thing and it wasn't long before they were making out and sticking tentacles into each other. the mass of tentacles watched this display and was pleased to see his plan finally coming to fruition. soon the hybrid race would expand exponichaly.
Eve started to thrust into Luna. "I'm going to fill your little girl's pussy with so much cum." she screamed in pleasure.
this made Luna want her even more as her tentacles found their way to Eve's pussy and all 3 penetrated her and rapidly expanded becoming huge on her small frame. Eve moaned as she felt the tentacles expand and break into her womb. it didn't take long under this combined assault for Eve to cum filling Luna. Luna's body went rigid as she had her first orgasm her pussy squirting and her tentacles doing the same. Both of them were pregnant now and cuddled their wombs still expanded from the cum inside of them.
That night while Eve and his offspring slept the tentacle mass left the planet feeling that his job was done there he went off in search of other species it could spread its genetics too. the technology and knowledge he left behind would serve the new race well. Although he couldn't do much for Eve he did make it so their children would live longer lives although it did come at the cost that they would look like what he guessed Eve looked like at 10 until they were 150 at which point they would rapidly grow old and die but the changes he made to them should make them a powerful civilization in a very short time.