Touhou LostWord - SDT Floor 440: (Touhou 16.5 Nightmare Diary)

Scarlet Devil Tower 440F - Touhou 16.5 Nightmare Diary.
Doremy, Sumireko, Yukari are 3 of the bosses in Nightmare Diary.
[The Darkness Brought In by Swallowstone Naturalis Historia] - Story Theme 2 from Touhou 16.5 (VD),
[Eternal Spring Dream] - Doremy's Theme from Touhou 15 (LoLK),
[The Concealed Four Seasons] - Okina's First Theme from Touhou 16 (HSiFS) are being used.
[The Darkness Brought In by Swallowstone Naturalis Historia] is also in [Dateless Bar "Old Adam" (Hifuu CD Album)], same as "[Old Adam" Bar] as Story Theme 1 in Touhou 16.5 (VD)
Doremy's theme & Okina's theme are Story Theme 3 & 4 in Touhou 16.5 (VD)
Doremy's theme & Okina's theme are here, because they're being used in Touhou 16.5, during fighting Doremy & Sumireko.
The plot in Touhou 16.5 (VD) is, you've played as Sumireko from Dream World throughout the whole game, except Nightmare Diary's last level.
In the last level, you play as Sumireko from Real World, fighting against Sumireko from Dream World, and Okina was in cutscene to get rid of Sumireko (Dream World)'s ability that Okina has given to.
And during Sumireko vs Sumireko at the last level, Okina's theme was played.

[@JKDontJudgeMe]

Music Change: 3:48 & 8:28