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Chapter 4: Girls and their boys 

Little girls grow big. Hannah and Hailey have both reached the age of eighteen in this chapter and you know what that means. Yes, that! And also: that they're a lot bigger than before (even though they will get a lot bigger still).

Biding their time to get their hands on Leon, each of the sisters finds their own boy to play with. Hannah's is the bodybuilder Jago, who is bigger than Hannah (for now), but shorter. Hannah teases him for it and challenges him. They are both in for a surprise.

Hailey's boy is her very small schoolmate Frankie, who does schoolwork for her in return for... proximity to Haileys gorgeously hot body. In this chapter we see how Hailey mandhandles the little boy in a sublime way, overpowering and dominating him with incredible ease and cockiness.

As the young female bodybuilders grow, so grows their confidence. Hannah gets closer to Leon (and you can take that quite literally), and when Leon brings a female friend home, Hailey makes them clear that she's none too happy.

This chapter features comparisons, wrestling, intimidation and domination, lifting, the first NSFW scenes with both girls, boob- and muscle worship, a beautiful throw, and more...

Muscles in the Family is a long female muscle growth series that tells the story of two girls who want to get bigger for one boy. Hannah and Hailey, starting out at thirteen and twelve years old respectively, have a crush on Leon. Leon is from a different mom and dad, but they have been living together ever since Hannah and Hailey's mom got together with Leon's dad. For all practical purposes, they're siblings.

130 pages

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No characters are nude or participate in adult action when they are minors.

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5 (7 reviews)
s******1
2021-10-10
This is really a good bundle , I love the sisters , I hope the sisters will not abuse too much violence on Leo and I hope the sisters' sizes are not too giant , not larger beyonde the human's understanding .
J**n
2021-04-22
It was a really nice one, but I think that Hannah is too much in the background
A*i
2021-07-14
Great comic, just my fatasy.
L*e
2021-04-22
The comic seems more about Hailey than Hannah. I would love to see both girls as they develop. Both girls are absolutely gorgeous!! They easily control the males in their lives.
J******h
2021-06-23
superb
M****n
2021-05-04
This story is really one of the best from last years....Love growing young girls...
M**c
2021-04-23
So happy with another awesome slow progression story! It's awesome to see the girls blossom and discover their superiority. Love how both of them have their own storyline going on, yet still being part of the big picture. Introducing new toys for them before they're ready for Leon is genius! The scenes at the pool are so incredibly gorgeous! Literally throwing Frankie and taking her sexual frustration out on him were some of the hottest scenes I've seen. Wouldn't mind seeing more confrontations between Hailey and the small girl. ;) I can't wait for the next chapter(s) of this epic tale!
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Muscles in the Family - chapter 4

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