Original title: おはようむ (read as Ohayoumu). A portmanteau of ohayou (good morning) and Youmu.

A series of illustrations by Youmu-kun where Touhou characters (mostly Konpaku Youmu) introduce various holidays to the viewer.

Because these get posted out of order, and in order to be able to browse all of the holidays in sequence, let's attempt to keep this ordered chronologically by holiday date, then by order of original posting (if there are multiple for the same date).