There is a strange custom in my village. Once every few decades, to worship the village god called "Injin", a shrine maiden and a boy chosen from the village are locked up in the shrine for three days and three nights, as if they were the Injin. This is an ancient and important ritual. There is a rule in this ritual that must never be broken. That is... to obey an erect penis. The shrine maiden must serve the Injin until the erection subsides and if she breaks the rule... she will be locked up in the shrine forever... and I have been chosen by that Injin! What's more, the shrine maidens are beautiful sisters from a village famous for hating men... and my crotch is already fully erect at the sight of the two indecent shrine maiden outfits!! Will I be able to complete the ritual safely... or...