Being the only Yama in charge of Gensokyo for thousands of years, Eiki Shiki has every right to take a day or two off. In fact, that sounds like a fantastic idea. It would certainly give her the time to find new people to lecture... The only problem is who would take her place, performing a thankless and extremely stressful job. There's only one person, or pony, that Eiki can think of who is suited for the job.

Also posted to my Ao3 account where I am occasionally posting Touhou stuff.