Milk Factory

For the character with the biggest bust in not only Cinderella Girls, but also all of Idolmaster, there's surprisingly little about Shizuku Oikawa. Even less for Sanae, who I paired with Shizuku for this caption primarily because the two were in a unit called Sexy Guilty--they and Yuko Hori sang Mouretsu★Yonaoshi Guilty, and, as far as I can tell, nothing else. It seems Idolmaster has a lot more one-off units than Love Live. Maybe that's due to the series' colossal number of characters, as opposed to Love Live typically just having nine girls per series.
As for the title, it's a reference to the nukige visual novel developer of the same name. They used to be SQUEEZ until TechArts closed down--good stuff, I recommend it.

The image I used is of Shizuku Oikawa from Idolmaster, done by umasan on Pixiv. The image was also used as the cover for a doujin called Oikawa-san to Yukata to Oppai by the same person (credited there as Toba Yuga).

Thanks to Akane for beta reading and additional contributions.

All persons depicted are fictitious, not owned by me, and above the age of 18.

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TRANSCRIPT:
Sanae-chan, good evening! I'm so glad you could make it! Like my yukata?
I wanted to bring you up to speed regarding what I've been up to, since we haven't been in touch lately. After my encounter with Azusa-senpai and Takane-senpai a while back, my powers kept on growing and growing! I couldn't help but share the joy with Kanako-chan along the way, and now I'm finally omnipotent! Months of intense, unbearable anticipation culminated in an explosive, pandimensional orgasm of orgasms that hasn't relented yet and never will, simply because I want it to keep going! I knew going in that this would be amazing, but I had no idea! Takane-senpai was absolutely right that it's beyond human comprehension!
But, no matter how indescribably amazing my ascension feels, lactating feels even better, so my powers just magnified that infinityfold! I imagine it's because my breasts have always been full of milk and my let-down reflex has always felt great! My milk has gone from just being abundant to becoming an outright cure-all straight out of legend! Any illness, any disease, any injury, no matter how severe or incurable--just have a bit of milk and it goes away instantly! Someone in life-threatening pain could become the very picture of health, just like that!
And that's just from a few diluted drops! Drinking it straight from the source lets you start inheriting some of my powers: immortality and invulnerability, dramatically enhanced physical and mental capabilities, and of course, a godly libido that puts Zeus himself to shame! My milk makes ambrosia seem like stale water by comparison!
For that alone, my milk would probably be worth trillions of yen--enough to buy countries or governments! But my supply is limitless, so it's free to anyone who asks nicely~! Though I don't give it to people who just want it for a power trip. There was this one holstaur in another universe who was having problems producing milk, so I gave her master some supplements to help her out a little! I haven't checked up on her, come to think of it--I'm curious to see how effective those supplements I made are!
Anyway, since it feels so amazing producing my milk, I have trouble willing my body to stop! I can, don't get me wrong, I just don't want to~!
I know I said my supply of milk is limitless, but even so... seeing it drip down like this feels... wasteful, you know? I can tell you agree, seeing as your eyes haven't left my breasts since you arrived! I've always been fond of wearing yukatas the traditional way~🤍
Oh, I may have been embarrassed about this a while back, when I was just a farm girl-turned-idol, but as you can tell, a lot has changed since then! For one thing, I didn't have the courage to talk with you like this about anything outside of work, let alone confess to you!
...Ah. I... I said it! I, uh... I meant to lead into it, but um... yeah! I've found that god powers also result in surprising boosts in confidence. I've been surprising myself a lot lately.
But anyway, you don't need to say anything. I can tell you want to drink my milk, and I certainly want you to. Even if you don't share my feelings for you, I would still like to share my gift with you🤍