I can’t, it is pretty damn good. This is a origin story. First part was the Scarlet Mist, second was the Moriya Shrine(Sanae and the gods - Youkai Mountain)/Underworld. The second was covering how they were trying to take over the Hakurei Shrine, and Reimu’s doubts about her efficiency as a shrine maiden. It hit her psyche a lot, but eventually she did away with that doubt.
The Moriya Shrine used donation extortion and isolation, but was a transactional thing between them and those on the mountain. Sort of a forced faith kind of thing. Reimu barely had any, and it gets into how the Shrine Maiden has the potential to become a god. The power granted in equivalent to the faith they have. Making Reimu more of an anomaly, since she barely has any.
The battles aren’t easy as well. They are long, taking a single hit can be a problem if you don’t use the skills efficiently. And those are limited by SP, which isn’t easy to recover. There is a lot of resource management. The hardest bosses have 3 to 4 phases. With the Moriya Shrine one having two bosses, eventually down to one. For a total of 6 phases.