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previous thread)
Prologue: Reimu Hakurei (aged 63) discovered an infant named Satsuki, and adopted her as her granddaughter.
Chapter 1: Reimu, knowing that a stable time loop involving a "mysterious youkai" named Meimu had been closed, gave Satsuki "Sacchin" Hakurei the task of finding "the Precious Object" in a mysterious witch's cottage in the woods (actually Marisa's) as part of Satsuki's training to become the next Hakurei miko. She would also prevent "the Ungodly Object" from falling into her hands. Sacchin travelled there, fought the transcended-fairy Cirno, and entered, stepping into a mysterious transportalizer.
Chapter 2: Marisa and Alice's biological daughter, Carroll Kirisame, fooled around in her house a bit because she knew her parents were planning something, so she didn't want to get too involved with anything else, until she got into a fight with her sister, Shanghai Margatroid the independently-moving doll. Marisa then tasked Carroll with acquiring the Precious Object and destroying the Ungodly Object in her own cottage, as a test for unspecified reasons. However, they were interrupted by a loading screen, leading to this:
> [S] Carroll: Go for it.
> -=->
> -=->
> End of Chapter 2.
RAAARARRAAUUUAAAAUUAGHGHGGHGGGGHHGH!