Rin's body is the right size of her thighs to completely wrap around my dick. But not just her thighs, her body keeps the same proportion.
Rin's figure was perfect to Arthur, and he didn't want her to got as out of proportion as his sister. Right after, he recorded that, he asked RIn:
- By the way, how tall are you?
- Hmm? I'm 4 feet 11 inches, no wait...
And then he could feel her whole body growing, as reality adjusted itself. Her thighs were engorging, her torso was stretching upward, her legs getting longer...
- I'm... Actually 5 feet and... 2, no... 4 inches... Wait...
- That's... Quite big...
- Yeah, I'm close to 6 feet actually...
- Rin's always been the tallest among us! Intervened Tabitha, who used to be the tall one.
Rin's body was now ominously towering him, as her weight became more and more imposing... But her butt was getting bigger too, and the increasing pressure on Arthur's dick made him feel more and more aroused... And Rin was still growing! Her clothes were getting larger too, to accommodate for that, even though her skirt remained proportionally small.
- Y... You're taller than me, right? Muttered Arthur, out of breath.
- Yeah of course, you know that! I'm 6 feet 5 inches! I've always been a bit self conscious about my body... Some people told me I look like a big doll.
- Mmh, yeah...
- But still, your stick is so big, I still can't quite stick it between my butt...
- Ggh...
The weight... Her body... It was so big now... He could barely see the back of her head... Why... He never thought she would end up this big...
- Oh, finally, there it is!
Arthur's bulge now fitted right into Rin's enormous butt cheeks, and for the height of...
- So to answer your question, I'm 6 feet 11 inches, and if you wanna know my weight is 220 lbs!
- That... That's good...
- So yeah, you're really brave, hum, big brother, to let me sit on your lap.
- Anything... For you to learn new things...
- It's amazing how your big stick and my big butt fit so much... It's so comfortable...
Rin started to jiggle back and forth to feel Arthur's "stick" more. She was also quite enjoying this... Arthur's big stick... Right under her... She dreamed of that moment! She didn't understand why or how it got so big, but it didn't matter thanks to her huge body... She was never so grateful to has this huge body! She wiggled more and more...
- R... Rin... Muttered Arthur.
- Isn't that what I'm supposed to do?
- Y... Yeah...
Rin jiggled and jiggled, moving Arthur's dick engulfed into her enormous ass. It was completely covering his lap! So much... Pressure... Arthur turned white as a sheet, then...
- Nggh! Guh...
- Ah! I feel something wet!
Rin suddenly stood up, finally letting Arthur feel blood rushing in his legs and head... He almost passed out! And yeah, he came once again right into his pants.
- Wowh, it's that sticky sweat?
- Y... Yeah... Said Arthur, regaining his colors.
- Arthur... I mean, big brother, are you alright?!
- It's okay, it's... Perfectly normal.
Zoey was concerned.
- Wowh... I never realized this was so tiresome to you... And I pumped so much of your sticky sweat earlier...
- It's... Alright. Lesson's over, you made a perfect... little sister Rin. You can sit down.
- Thanks big bro... Can I keep calling you big brother?
- Yeah, sure.
Zoey started pouting. "But I'm his only sister!" but Arthur didn't care. He watched the gigantic Rin, her head almost reaching the ceiling, sitting on the chair, and the chair creaking like hell under her weight. Even sitting down, it was jarring how Rin was big for her age, especially compared to the others. But she wasn't just tall... She still had her amazing proportions, her "formal" skirt barely covering her legs... And she was red from embarrassment too! She didn't believe she had sit on Arthur's glorious stick...
Arthur's breath was still shaky. He looked at the dictaphone, wondering what to do next...
Tue Jan 15 00:00:00 2019