One panel from a series of 4koma on Pixiv Fanbox. A full run of 22 comics, at the rate of 3 per month. Summary: Aunn tries changing up her duties by guarding the temple, after a chance meeting in town turns her into a Shou fangirl. (I guess an avatar sets off her Buddhism detector quite a bit.)
Cast: Aunn, Kyouko, Shou, and Ichirin, mostly. Byakuren, Murasa, Nazrin, and Lily White have minor roles. Reimu bookends it, losing Aunn to Shou at the start and getting her back at the end.
Notable bits: Aunn arrives at the temple and immediately mistakes Kyouko for one of her own (despite getting the classic yamabiko auditory sledgehammer treatment for her boisterous greeting) and attempts to get her onto the other perch at the temple door. This seemingly amuses Ichirin so much that she relieves Kyouko of her other duties and tells her to guard the temple.
I'm not well versed on Aunn but here she seems to have developed a Flandre/Yuuka-ish ability to split herself into several copies. She uses this to catch a nap while remaining vigilant, but a well-meaning suggestion from Kyouko leads to her overstretching herself.
Continuing the series theme where Shou is either very blessed or very cursed, when Shou returns Aunn to the Hakurei shrine Murasa assumes she'll get a smackdown from Reimu. Instead she comes back having had a chat and some tea with the shrine maiden.