Ah, I shall need to check DLSite in a few weeks!

EDIT: It's up. http://www.dlsite.com/home/work/=/product_id/RJ224985.html

Summary:
20 pages, though 6 are cover, text or flyleaf, so it's 27 comics and a splash panel.
Kyouko, sent on an errand, gets distracted helping the Aki sisters with some off-season work. After a misadventure, the trio go to the temple. Much of the regular cast shows up, some only briefly. (Lily does not appear at all - no tinies here.) Guest stars: The Aki sisters, Bishamonten.

Notables:

Several costume changes in this one. A couple characters get to wear bathrobes and the sisters get a chance to talk up their more traditional-formal "god uniforms".

Two panels, Kyouko echoing some frogs and Byakuren carrying Kyouko, just make me smile.

The running gag of someone shouting near the living amplifier is still running.

There's actual Latin alphabet in a word balloon in this one - the "cm" in a measurement. Added to the sleeping Zs, we should have a full use of the alphabet by 2047.

I'd gladly give Minoriko's line of toiletries a try.

The interesting religion-themed interactions between the Buddhists and the (intrinsically Shinto) Aki sisters. Nazrin, it seems, is subtly (but very) proud of her faith.