All Souls Night is an excellent introductory scenario for Ryuutama, with a great emotional core and well thought out, flavorful encounters. I frequently reccommend it to those new to the game looking for pre-written content.

As written I think the scenario really shines when run in 2-3 sessions. Although Pureka includes several optional encounter tables, I think the game is much better if you use them, and captures more of the feel of journeys in Ryuutama.

If you're committed to running this in a single session, I recommend cutting the Witches Tasks and going straight to the "Preparing for the Ritual" section, which should cut the game down to one-shot length.

Oddities and Endlings is probably one of the best statosphere splats out there right now. Clocking in at a highly ambitious 200+ pages, it's full of optional (but well-integrated) rules, excellent rituals for use in a campaign or session, otherspaces, artifacts and identities, and even a whole campaign setting, itself very well put together and cohesive.

Ben Hammond only has one other splat out on statosphere--Me, Myself, & You, which is itself one of the best loved splats on statosphere already. Oddities and Endlings really feels like a labor of love that the author spent a boatload of time, attention and care into creating in order to make a splat as good as any officially published content.

The formatting also looks great, so kudos on that. If you like Unknown Armies, this splat is an extremely worthy purchase, especially if you are running a long-form campaign.