This is background picture of MV of テーマ・オブ・カーテンファイアーシューターズ -History 3/3+- or "Theme of Curtain Fire Shooters -History 3/3+-".

It is an arrangement of テーマ・オブ・イースタンストーリー (Theme of Eastern Story). This arrangement made by circle: 凋叶棕 (Diao ye Zong). Arrangement and Lyrics: RD-Sounds. Vocal: めらみぽっぷ (Meramipop). Chorus: Meramipop, Nayuta. Art by はなだひょう(Hanada Hyou).

"Curtain Fire Shooters" = Danmaku / Bullet Hell. This song is about Touhou games and story version 3/3+ (windows). (version = generation?). Lyrics is about playing Touhou and contains phrases reference to all games since 6-17.
The previous versions are 2/3 and 3/3. They're in album 奉. (I can't find anything about 1/3)

English + Vietnam Translation by Amen and Petalite Yuu.

I wanted to post this on 17 November. The day it was uploaded. I also want to go into details of lyrics (Even I can't do much). But It's pretty long at this point. So I decided to it on this day instead, 12 August. The day Touhou 17 Wily Beast and Weakest Creature was fully released. The MV is the the first video that RD-sounds uploaded to his Youtube Channel. The song that about the series and uploaded near the end of the decade. So It reference every games* at that point. What a legendary way to start channel.

According to this. It was used in 博麗神社うた祭 (Hakurei Shrine Music Festival) at Tokyo in 2019. It's the event I've been looking for since I found about the song but It was cancel at 2021 and probably 2020 too.

I like this picture so much. It has at least a boss from each touhou game. But I can't find the still picture. So I had to extract it from the video.

Process:
- extracted images from video every x seconds. (FFmpeg is a good tool)
- selected some of them and stacked them on each other.
- slightly edit brightness and contrast the bottom section of picture.
- upscale using RealESRGAN_x4plus_anime (I incidentally found out that this process also removes noise caused by Youtube compression and borders of each images. I just want to upscaled for fun at the started)

However, I had to scale it down because It's too large for reddit and others. Damn, What should I do with 2X and 4X version? (~30, ~100 MB) lol

Keiki is mostly at the center.

RD-sounds's favorite character is Alice. Is that why she's on the top?

Source: https://www.reddit.com/r/touhou/comments/wmoevv/the_illustration_of_theme_of_curtain_fire/ik0aqqv/