https://www.dlsite.com/books/work/=/product_id/BJ105447.html
https://book.dmm.co.jp/detail/b073bktcm01326/

translation info:
raw: https://e-hentai.org/s/02df6868b2/1038581-65
group: desudesu https://desudesu.mangadex.com
commissioner: espeon https://gender.tf

read early and support more gb at https://gender.tf !

He gets slightly touched by a tentacle and instantly gives up fighting back after shooting energy beams just seconds before

Base +8, jayrected +3, Feladrance +6, xaelath +5, darklord1235 +9, Takepyon +6, asriel02 +7, BonoBono08 +6, Lesamuen +6, El_Lazor +7, rockball +6, sable1 +23, mootxico +19, and 42 more...

As expected of tentacles.

Base +6, jayrected +3, Feladrance +6, darklord1235 +9, Lesamuen +6, El_Lazor +7, sable1 +23, mootxico +19, IMNC +6, yunnch +6, rjimenez666 +6, Mufarasu +7, IncognitoMaud +6, and 12 more...

Thanks for share, waited for this for quite some time...

Base +9, mootxico +19, AncientPhoenix +7, unknownshadows +6, Porokichin66 +9, anemoneeure +6

"My asshole! Pussy! Peehole!"

ah the classis TG doujin where once the trans MC is cummed inside once, she becomes a slave!

Base +6, mootxico +19, onenightes +6, DRAGONRULER +6, liberius +6, HiddenAgenda +8, unknownshadows +6, Rglass +6, Porokichin66 +9, tombobbbb +9, Xenon +8, WaRiUr +9, Kues -6, and 1 more...

Frankly, I'm surprised the baby look human. Judging by the comment in the last page on how this is apparently how the family continues, it definitely is human.

Base +5, mootxico +19, unknownshadows +6, WaRiUr +9, Power of Void +7

I can’t imagine a tentacle catheter would be a particularly nice feeling, but then again I’m not a slut whose family has been getting raped by tentacle monsters for generations.
Maybe it’s the monster blood, maybe it’s hentai.

Base +6, mootxico +19, onenightes +6, yunnch +6, Paelias +6, HiddenAgenda +8, unknownshadows +6, m42a +16, Porokichin66 +9, Xenon +8, prostoann14 +6, Acerola +13, WaRiUr +9, and 4 more...

@Stephen9001

It's how the demons continue their line, not how the human family do.

It is just one member of the family chosen to birth demons, specifically the family head. It is safe to assume the rest of the family have human children with human partners.

Base +31, mootxico +19, Elementxj +6, yunnch +6, rjimenez666 +6, HiddenAgenda +8, unknownshadows +6, Porokichin66 +9, Tadsapon +7, WaRiUr +9

and see this is why the Family head enjoys this shenanigans so you don't have to

Base +6, mootxico +19, yunnch +6, HiddenAgenda +8, unknownshadows +6

So, that other girl then trains herself half to death and becomes Doomgirl and murders all the demons, right?

Base +6, mootxico +19, swordpaladin +9, rjimenez666 -6, yunnch +6, Xerodusk +28, firestoneishot +6, IncognitoMaud +6, Jago Smith +8, Pliny the Younger +6, KMRblue1027 +7, unknownshadows +6, Rglass +6, and 5 more...

wow this so old one

Base +3, mootxico +19, unknownshadows +6

@AdoTheDogiCrusher you say that like it's a bad thing.

Base +5

Or he could have just unwrapped that tentacle.

Base +25

since it got recorded in the book in the last page there, is that mean they always born a male and got turned later?
also if this is a generation thing, you would think they would teach them to welcome this kind of thing more,

Base +7, Power of Void +7