The perpetrator is revealed to be Suika Ibuki , a long-lost oni who had disappeared from Gensokyo.
Despite the cherry blossoms having fallen, no one seems willing or able to stop the partying. Every character—from Reimu Hakurei to Marisa Kirisame —begins an individual investigation to find the source of this "unending feast".
Because the knowledge of how to properly exterminate an oni had been lost to time in Gensokyo, the heroines couldn't fully defeat her in the traditional sense. However, after being confronted, Suika's mist eventually dissipated, and the frequency of the feasts returned to normal. Meaning of the Title Touhou 7.5: Immaterial and Missing Power Free D...
As the first fighting game in the series (a collaboration between and Twilight Frontier ), the story is told through a Story Mode where players pick a heroine and fight seven opponents. Immaterial and Missing Power - Touhou Wiki
Following the events of Perfect Cherry Blossom , spring has finally arrived, but it refuses to leave. Every three days, the inhabitants of Gensokyo gather at the Hakurei Shrine for a feast, driven by a strange, restless spiritual aura. The perpetrator is revealed to be Suika Ibuki
The story of (often abbreviated as IaMP ) centers on a mysterious phenomenon where the residents of Gensokyo find themselves trapped in a cycle of endless feasts, even though the traditional cherry blossom viewing season has long passed. The Plot: "The Night Parade of One Hundred Oni"
The title's "Missing Power" refers to the which was considered "lost" or "missing" from Gensokyo since they had long ago retreated to the Underworld. "Immaterial" likely refers to Suika's ability to turn herself into a thin, intangible mist. Gameplay Context Because the knowledge of how to properly exterminate
Suika uses her ability to "manipulate density and sparsity" to spread herself thin as a mist throughout the realm. By "gathering" the hearts and thoughts of people and youkai, she compelled them to feast indefinitely.