In the afternoon, outside of the mansion with Rico and Kyoko Kirigiri in the backyard, having an air tank to have some fun. Kyoko connect the hose to it, looking at Rico with a warm smile, agreeing to do what they planned for this day.

Rico: ready for our fun day, Kyoko~?

Kyoko: I'm ready to become a big, hopper ball for you to bounce on, Rico. Everything is all set up for me to inflate~. *Wink*

Rico: nice. I can't wait for you to get big again. It's a beautiful day for us to have a lot of fun together~.

Kyoko: it really is, baby. Now, hop on my back. I'm going to inflate myself right now~.

Rico hops onto her back, wrapping his arms around her neck, legs locking around her waist as she chuckles, putting the hose in her mouth, and turning on the air tank. She feels the cool air puffing her cheeks up, patting her swelling belly that's stretching her shirt, popping off the buttons and her butt and thighs expanding, lifting her skirt up to show her panties. Rico giggles, seeing her expanding a lot more bigger, hugging her back as her arms and legs gets puffy, sinking into her body and breasts getting so large. Kyoko moans softly, becoming a giant blimp full of air, spitting out the hose, feeling very full and light.

Rico: now that's what I called a huge hopper ball, Chub chub. I'm very happy to play with you~.

Kyoko: *muffled* good boy. I'm happy you love to play with my big body. Bounce me all you like~.

Rico: oh I will bounce on you real high. Possibly around the city~.

Kyoko: *muffled giggles* that sounds interesting. Let's go there right now~.

Rico would start rocking back and forth, making her start bouncing from the backyard, using her like a giant hopper ball as they both laugh, feeling her inflated body wobbling each bounce she takes. They bounce through the city, gently bumping into walls to try not to cause property damage, and make their way to the playground where more fun begins. Rico cuddles on top of Kyoko's inflated belly, touching her Inflated breasts, and looking at her eyes with a mischievous smile.

Kyoko: *muffled* you're such a naughty boy, Rico. You really love me inflated so much~.

Rico: *laughs* of course I do, Kyoko. I always love my inflated detective that's really fun for me to play with and cuddle on~.

Kyoko: *muffled* if that's the case. Then rub my inflated body and let's bounce around for a while~. *Smirks*

Rico: now, that's what I'm talking about, Chub chub~.

He put his hands on her Inflated belly, tickling her to make her laugh, enjoying to see how much she loves to be inflated. He works his way from her belly to her large, inflated butt, giving it a good squeeze to make her moan softly. After rubbing and groping her, he rolls her upwards, hopping on her back as they journey through the fields, feeling the cool breeze that hits her taut skin, enjoying the sun shining on them. After hours of their fun, Kyoko blows out all of the air from her body, deflating back to her normal size, and scoop up Rico in her arms to give him a big hug.

Kyoko: that was really fun, baby. I'm glad to agree with you on this~.

Rico: I really had fun with you. Thank you for being a big hopper ball for me, Chub chub~.

Kyoko: *chuckles* you're welcome. Now, let's relax in the park for a little bit before we go home~.

Rico: sure. I would love to enjoy this beautiful day outside more~.

Kyoko gives him a big kiss, moaning softly, and cradling him close to her chest, carrying him to the park to sit down on the bench. Rico sits on her lap, sighing in relief, feeling her patting his head, and her arms wrapped around him like a mother caring for her son. He looks up at Kyoko, smiling, and feeling her kissing his head while they both enjoy their day, relaxing in the park after he had a lot of fun with his giant, hopper ball detective.