Gensou Mangekyou: The Memories of Phantasm 2

Gensou Mangekyou - Phantasm 2 Just right after the events of SA, the Moriya Shrine holds a party where almost all characters are included. Main characters then read an article on Aya's Newspaper about the Scarlest Mist Incident, which happened during Embodiment of Scarlet Devil. Remilia feels nostalgic and Sanae wants to know how Reimu solved this incident. Marisa and Sakuya then decide to tell the story.

The rest of the episode is focused on the events of EoSD, however, the plot is different in several things, such as Aya telling Marisa to gather information from Scarlet Devil Mansion, or Marisa directly battling against Flandre, and Patchouli afterwards. According to one of Patchouli's dialogues, Reimu is inside SDM at the same time she's battling against Marisa. After the credits, Manpuku Jinja announces Reimu will battle Sakuya and Meiling in the third episode.

Check out the video below

If video is small there url: https://www.youtube.com/watch?v=PsrMUKdPQRE