One day, Harugamiseki Hisame encountered an unusual situation in the park: a young lady-like girl was being targeted by an arrow.
He shielded her with his own body, but as a result—he ended up turning into a girl!?

Now known as Tsukishiro Hime (formerly Hisame), she was allowed to stay in the mansion as a maid by the young lady she saved, Tsukishiro Ouka, until she could return to her original form.
However, peace never seemed to come.
The culprit who shot the arrow, a Cupid Monarca, also seemed to be staying at the mansion, but she appeared to be plotting something suspicious...

"The female body feels so much better than the male body!"
Once he realized that, there was no going back to being a man.
Hime found herself sinking deeper and deeper into unknown pleasures.

[Translated from DLsite]