I couldn't find this GST anywhere, so, I decided to upload it myself.
This music come from the fangame (danmakufu script) Phantasm Romance, final song of the game.
This extra stage is special, in fact, it's just the 6 previous stage reversed
The boss are obviously the same you faced before, the difference is that they only have a "last word" spellcard (similar to IN's system, you don't lose life if you get hit by a bullet).
After a long periple, you finally reach the final extra boss: Reimu Hakurei.
Be ready for a long and intense danmaku battle.
All of her theme are awesome (she has 3), here is the last one.
The condition to reach extra 4 are similar to these needed for extra stage 3. (you can choose extra 3 or 4 at the end of stage 6), but it's WAY more difficut than extra 3.
I do not own anything
I really like the music he's used for his script, it's just plain awesome.
SarkenHS 2 months ago