Summer is almost done, playing at the pool, Rico was floating around, wearing his swim shorts and arm floaties to keep him floating in the pool, he then see someone swimming towards him really fast, getting out of the water, giggling with him. It was Aoi Asahina, the ultimate swimmer that's practicing her swimming skills, patting his head, and gives him a warm smile.

Aoi: hi there, kid. I'm Aoi Asahina. I'm the ultimate swimmer. What's your name?

Rico: my name is Rico. It's nice to meet you, Aoi. I was playing in the pool for summer since it's really hot.

Aoi: *chuckles* that's understandable. I was just swimming to practice my swimming skills.

Rico: that sounds really cool. Can I ride on your back to swim?

Aoi: of course you can. Hang on tightly.

Rico climbs up on her back, holding onto her shoulders tightly as she starts swimming really fast without getting tired, laughing to enjoy the fun ride. Aoi smiles, playfully splashing water at him, and continuing doing laps in the pool, loving him having fun with her. Thirty minutes later, they're getting dried up, putting their outfits on as Rico looks at a helium tank, thinking about an idea to do with Aoi.

Rico: hey, Mommy Aoi. I was thinking about that helium tank in the corner and I've thought about if you would like to use it?

Aoi: sure, baby. What would you like to use the helium tank for?

Rico: we can use the helium on you, Mommy. Besides, you can be a big blimp for today as well~.

Aoi: oh dear, you're naughty. But if this is what you want, then I'll do it for you, baby. Hop on my back~.

Rico nods, hopping on her back, clinging onto her as she puts the hose in her mouth, turning on the helium tank that's puffing her cheeks out, inflating her belly, stretching out her jacket and tank top. Aoi's butt and thighs expanding, stretching out her shorts that makes her butt crack fully exposed, moaning softly as she floats up in the sky, holding onto the hose while Rico hangs on tightly, enjoying the sight of her body becoming a lot more bigger with her arms and legs puffing out, sucking in her body with her hands and feet sticking out. She spits out the hose, floating into the sky, finally becoming a large blimp for him to play with.

Aoi: *muffled* wow. That felt so good, Rico. Being inflated isn't so bad after all~.

Rico: I'm glad you're loving this so much, Mommy Aoi. You do look adorable as a blimp~.

Aoi: *muffled* aww, thank you, baby. Relax on my back and enjoy your blimpy swimmer~.

Rico: sure, Mommy~.

While they float around, looking down at the beautiful city below them, he hugs her Inflated butt, nuzzling his face in her exposed butt crack that made her moan softly, blushing to feel him pulling her shorts down to get her exposed. Aoi giggles, floating down to his mansion, going to the window where she gets stuck. Rico helps her fit through by pushing her inflated butt cheeks, finally squeezing through the frame into his bedroom, feeling him now rubbing his small penis between her cheeks, penetrating her that made her gasp in pleasure.

Rico: you're very wet and turned on, Mommy Aoi. It feels really good to do this with you~.

Aoi: *muffled moans* oh yes, baby. Keep going for Mommy~.

Rico: I'll keep going for you. I feel feel your pussy squeezing my little peepee tight~.

Aoi: *muffled* mmmm, I need more of you in me. Let me try to twerk my big booty for you~.

Rico thrust in her more, cuddling between her large ballooned butt, panting in pleasure to feel her getting wet on his crotch. Aoi's eyes rolled up in her head, moaning loudly to feel him pumping his little hips against her inflated body, getting close to her climax, and feel his precum getting her more wet. She feels him playing with her Inflated breasts, teasing her erect nipples, making her giggle and moan more.

Aoi: *muffled* ohh, baby. I don't think I can hold it longer. I'm going to squirt right now~!

Rico: good, Mommy Aoi. That's what I like to hear. It makes me wanna release all of my love for you~.

Aoi: *muffled panting* release all of it in me, Rico. I want you to fertilize your inflated Mommy as much as you can give me~.

Rico: *moans softly* here it comes, Mommy... It's coming~!

He thrust in a few times, moaning to feel himself releasing all of his love deep in her, now feeling her squirting a lot of her love juice all over him. Aoi moans softly to feel him finally filling her up, panting as they relax for a while with him cuddling between her inflated butt cheeks, then having a fun idea. Now outside in the backyard where Rico is relaxing on Aoi's back, using her inflated body as an inflatable pooltoy while she floats on the surface in a big swimming pool.

Aoi: *muffled* this is a really good summer with you, baby. I really love being inflated for you so much~.

Rico: me too, Mommy Aoi. You're a really fun person to play with. Using your inflated body as a pooltoy is also really cool too~.

Aoi: *muffled giggles* I'm glad you're having a lot of fun with me. Maybe I can give you a lot more love by kissing your little peepee a lot~. *Wink*

Rico: *gets excited* that sounds really fun, Mommy. I would love you to kiss my little peepee a lot~.

Aoi: *muffled* good boy. Now, come to Mommy~.

Rico gets close to her inflated face, putting his hands on her puffy cheeks to give her a big kiss, feeling her tongue in his mouth as they make out together. Breaking their kiss with saliva attached on their tongues, he brings his little peepee to Aoi, feeling her plump lips touching the tip as she begins to kiss it a lot, then sucking on it with her tongue licking it, making him giggle and squirm. Aoi moans softly, continuing to kiss more as she's loving her day being his Inflated, blimpy swimmer for him to play with and do sexual pleasure to her Inflated body throughout out the summer of their fun together.