In the Storehouse

†žIt’s so different from my father†˜s. Yours is so small.“ He two sentences no man wants to hear...

Ooh, that Vanilla and Ojousama tags...Nice.
Also, would it be correct to say that her parents were basically being wingmen this time by being caught by her in the act? It stimulated her interest leading to this situation, after all.
That ending though. "It's fine as long as we're not caught"? I suppose that's true, but why not just make it official and start a relationship together? May as well do that and flirt openly. (Though maybe it is set in Showa for a reason, back then it may not have been common for women in a prestigious family to marry the common man, perhaps?)

When a freak has a teachable moment.

aha ha, just kidding.. unless..?

would've loved a short flashback to the present, showing them as an old couple remember their "dirty deed" back when they were young.

See’s it is a Hinasaki Yo work I click immediately to read! Hope this story gets a sequel!

Hinasaki Yo returns yet again with another titallating temptation.

Oooooooh ... Shouzou-kun's in quite the predicament by the close; risk facing consequences for being discovered as having (a-hem) 'deflowered' the young Ojou-sama, OR being Shizuko-sama's personal sex slave for a long time. Then again, all indications are that Shizuko seemed to like it (and maybe him also) so perhaps such slavery may not be so bad.

In The End, "the Ojou-sama's Orders are ... wait for it ... ABSOLUTE", and this work is "APPROVED!" 😆