"Hikari," She began. "Remind me. What's the biggest size you've blown me up to? Was it when we were at the market, and you made my tits fill my extremely stretchy sweater? Or maybe it was in our apartment, when my breasts filled with so much milk that I was laying helpless on top of them? Or in the grocery store, when I grew to almost 20 feet tall, just to reach a shelf?" She smirked as she saw Hikari's cock begin to twitch as she brought back the memories. Hikari remained speechless, unsure whether it was wise to goad her with an answer to a probably rhetorical question.
"Regardless." Continued Aoi, "The point is, you've swollen me up to all sorts of sizes, and it occurs to me that I haven't even returned the favor!" With this, she grabbed Hikari's cock with one hand and placed the other on her balls.