>Let's read the other three now.
> Underground Incident
> Culprit: Kanako Yasaka
> This incident is rather simple in details, but was arguably the most dangerous. In an effort to gather faith, Kanako Yasaka killed Yatagarasu, the God of the Sun, and let her corse he feastecd on by the Hell Crows, intending to use them, and Yatagarasu's power, to her own ends.
Utusho Reiuji was the crow who consumed the god, and she underwent a transformation. In addition, her newfound power drove her mad, with all of her limited brainpower suddenly being devoted to nuclear physics. She planned to pretty much cook the world. This caused disturbances underground, and lead to a gyser of spirits being let up by Rin Kaenbyou as a signal for help.
This spurred Reimu and Marisa into action, worried about the evil spirits, thinking they posed a threat. They calmed Utusho down, and later discovered Kanako was the cause.
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> UFO Incident
> Culprit: Shou Toramaru and other followers - Nue Houjuu
> Indirect Cause: Kanako Yasaka
> The geyser started by Rin in the Underground Incident dislodged a flying ship, containing the followers of Byakuren Hijiri. They began a search for item, specifically, the Jewled Pagoda of Bisamoten, and fragments needed to reach Hokkai, a realm of Makai, to unseal Byakuren. Nue Houjuu disguised the fragments to try and mess with the efforts of reviving Byakuren.
> Shou suceeded in unsealing Byakuren, and, as a result, breaking the seal between Makai and Gensokyo. While Byakuren turned out harmless to Gensokyo, there is still the danger of the damage done to the Makai seal.
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Desire Incident
Culprit: N/A; it was a natural event; triggered by the Mouyren Temple being built nearby.
Indirect Cause: Byakuren Hijiri; Kanako Yasaka [The temple would not exist if not for the Ship being freed]
> Due to the Mouyren Temple and Graveyard being built, more people came to the area where the Dream Spirit Mausloeum was buired. The increased amount of faith, and desires of humans and youkai gathering in the area triggered the resurrection of Toyosatomimi no Miko, and her follower, Mononobe no Futo.
> The spirits were thought to be gathering from all over for malevolent use, and, for various reasons, Reimu, Marisa, Sanae and Youmu went to investigate. It turned out that the gathering was harmless, however.
> Despite this, the revival triggered Nue to call the tanuki Mamizou Futatsuiwa to Gensokyo, claiming the balance of power had shifted and youkai were at threat.